VAN KAMPEN AMERICAN CAPITAL U S GOVERNMENT TRUST
N-30D, 1996-08-28
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<PAGE>   1
 
- ---------------------------------------------------------------
                    TABLE OF CONTENTS
 
<TABLE>
<S>                                              <C>
Letter to Shareholders...........................   1
Performance Results..............................   3
Portfolio Highlights.............................   4
Portfolio Management Review......................   5
Portfolio of Investments.........................   8
Statement of Assets and Liabilities..............  11
Statement of Operations..........................  12
Statement of Changes in Net Assets...............  13
Financial Highlights.............................  14
Notes to Financial Statements....................  17
</TABLE>
 
USGF SAR 8/96
<PAGE>   2
 
                             LETTER TO SHAREHOLDERS
                                                                              
                                                                              
 
August 1, 1996
 
Dear Shareholder,
    As you may be aware, an agreement
was reached in late June for VK/AC
Holding, Inc., the parent company of                    [PHOTO]                
Van Kampen American Capital, Inc., to    DENNIS J. MCDONNELL AND DON G. POWELL 
be acquired by the Morgan Stanley
Group Inc. While this announcement
may appear commonplace in an
ever-changing financial industry, we
believe it represents an exciting
opportunity for shareholders of our investment products.
    With Morgan Stanley's global
leadership in investment banking and asset management and Van Kampen American
Capital's reputation for competitive long-term performance and superior investor
services, together we will offer a broader range of investment opportunities and
expertise.
    The new ownership will not affect our commitment to pursuing excellence in
all aspects of our business. And, we expect very little change in the way your
mutual fund account is maintained and serviced.
    A proxy will be mailed to you shortly explaining the acquisition and asking
for your vote of approval. Please read it carefully and return your response for
inclusion in the shareholder vote. We value our relationship with you and look
forward to communicating more details of this transaction, which is anticipated
to be completed in November.
 
ECONOMIC REVIEW

    The economy demonstrated an acceleration in growth during the six-month
reporting period. After a nominal 0.3 percent growth rate in the last quarter of
1995, GDP (the nation's gross domestic product) rose by 2.0 percent in this
year's first quarter. And, as anticipated the economy grew by 4.2 percent in the
second quarter, partly reflecting a recovery from the effects of labor strikes
earlier in the year and extreme weather conditions across the country. Upward
momentum has been assisted by consumer spending, as indicated by a 5.6 percent
rise in retail sales in the first five months of this year versus the comparable
1995 period.
    In the manufacturing sector, economic reports, such as the National
Association of Purchasing Managers Index, suggested a continued rebound in
production from last winter's lower levels. In June, this index reached its
highest level since early 1995. Strong levels of exports and a replenishing of
inventories have helped support this momentum.
    Surprisingly healthy economic activity led to concerns that inflation may
rise and the Federal Reserve Board might tighten monetary policy. Inflation
remains modest, however, with consumer prices rising at about a 3 percent annual
rate over the past year. Meanwhile, the closely watched "core" Consumer Price
Index, which excludes volatile food
 
                                                           Continued on page two
 
                                        1
<PAGE>   3
 
and energy components, has risen year over year at rates between 2.7 and 3.0
percent per year, with mid-1996 readings at a moderate 2.7 percent. In general,
recent reports have suggested an upward creep in labor-related costs, while
indicating that prices of many commodities have begun to decline.
 
MARKET REVIEW AND OUTLOOK
    During the first half of 1996, interest rates rose sharply, and U.S.
Treasury yields increased by 1.00 to 1.25 percent. Benchmark 10-year U.S.
Treasuries declined in value by 7.8 percent. Signs of increasing economic
momentum, as discussed above, were the major factor contributing to this
decline.
    We anticipate that reasonably strong economic growth will continue during
the balance of 1996, albeit at rates more moderate than the second quarter's
swift pace. While we expect rates of inflation to remain near current levels,
the Fed may begin to lean toward greater restraint in its monetary policy in the
coming months. That suggests an upward bias for short-term interest rates and
for yields on long-term bonds to remain steady at current levels. In particular,
we expect 10-year Treasury yields to remain within a trading range of 6.50 and
7.25 percent.
    Additional details about your Fund, including a Question and Answer section
with your portfolio management team, is provided in this report. We appreciate
your continued confidence in your investment with Van Kampen American Capital.
 
Sincerely,
 
[SIG]
Don G. Powell
Chairman
Van Kampen American Capital
Investment Advisory Corp.
 
[SIG]
Dennis J. McDonnell
President
Van Kampen American Capital
Investment Advisory Corp.
 
                                        2
<PAGE>   4
 
             PERFORMANCE RESULTS FOR THE PERIOD ENDED JUNE 30, 1996
 
                VAN KAMPEN AMERICAN CAPITAL U.S. GOVERNMENT FUND
 
<TABLE>
<CAPTION>
                                         A SHARES   B SHARES   C SHARES
<S>                                      <C>        <C>        <C>
 TOTAL RETURNS
Six-month total return based on
  NAV(1)...............................     (.87%)    (1.30%)    (1.30%)
Six-month total return(2)..............    (5.60%)    (5.12%)    (2.25%)
One-year total return(2)...............     (.57%)     (.35%)     2.55%
Five-year average annual total
  return(2)............................     6.03%        N/A        N/A
Ten-year average annual total
  return(2)............................     7.47%        N/A        N/A
Life-of-Fund average annual total
  return(2)............................     9.51%      3.86%      3.04%
Commencement date......................  05/31/84   08/24/92   08/13/93

 DISTRIBUTION RATE AND YIELD

Distribution rate(3)...................     7.20%      6.81%      6.81%
SEC Yield(4)...........................     6.48%      5.96%      5.96%
</TABLE>
 
N/A = Not Applicable
 
(1)Assumes reinvestment of all distributions for the period and does not include
payment of the maximum sales charge (4.75% for A shares) or contingent deferred
sales charge for early withdrawal (4% for B shares and 1% for C shares).
 
(2)Standardized total return. Assumes reinvestment of all distributions for the
period and includes payment of the maximum sales charge (A shares) or contingent
deferred sales charge for early withdrawal (B and C shares).
 
(3)Distribution rate represents the monthly annualized distributions of the Fund
at the end of the period and not the earnings of the Fund.
 
(4)SEC Yield is a standardized calculation prescribed by the Securities and
Exchange Commission for determining the amount of net income a portfolio should
theoretically generate for the 30-day period ending June 30, 1996.
 
See the Fund Performance section of the current prospectus. Past performance
does not guarantee future results. Investment return and net asset value will
fluctuate with market conditions. Fund shares, when redeemed, may be worth more
or less than their original cost.
 
                                        3
<PAGE>   5
                              PORTFOLIO HIGHLIGHTS
 
                VAN KAMPEN AMERICAN CAPITAL U.S. GOVERNMENT FUND
 
 COUPON DISTRIBUTION AS OF JUNE 30, 1996
 
                                   [GRAPH]
 

<TABLE>
    <S>                   <C>
    5 or less...........    0.4%
    6-7.................    8.0%
    7-8.................   36.2%
    8-9.................   17.3%
    9-10................   27.5%
    10 or more..........   10.6%
</TABLE>


 PORTFOLIO COMPOSITION
<TABLE>
<CAPTION>
      AS OF JUNE 30, 1996
    <S>                   <C>
    GNMA................   53.3%
    FNMA................   28.7%
    Treasury/Agency.....    4.9%
    REMIC/CMO...........    8.9%
    FHLMC...............    4.2%

</TABLE>


                                 [Pie Chart]

<TABLE>
<CAPTION>
    AS OF DECEMBER 31, 1995
   <S>                    <C>
    GNMA................   48.3%
    FNMA................   32.5%
    Treasury/Agency.....    7.8%
    REMIC/CMO...........    7.7%
    FHLMC...............    3.7%

                                 [Pie Chart]
</TABLE>
 
 DURATION
 
<TABLE>
<CAPTION>
            ON JUNE 30, 1996         ON DECEMBER 31, 1995
<S>         <C>                      <C>
Duration       4.67 years                 5.43 years
</TABLE>
 
                                        4
<PAGE>   6
                          PORTFOLIO MANAGEMENT REVIEW
                VAN KAMPEN AMERICAN CAPITAL U.S. GOVERNMENT FUND
 
We recently spoke with the management team of the Van Kampen American Capital
U.S. Government Fund about the key events and economic forces that shaped the
markets during the first half of the Fund's fiscal year. The team includes Jack
E. Doyle, portfolio manager, and Peter W. Hegel, executive vice president for
fixed-income investments. The following excerpts reflect their views on the
Fund's performance during the six-month period ended June 30, 1996.
 
THE FOLLOWING KEY TERMS ARE LISTED IN THE ORDER IN WHICH YOU WILL
FIND THEM IN THIS REPORT.
 
BASIS POINT: A measure used in quoting yields on bonds. One hundred basis points
is equal to one percent. For example, if a bond's yield changes from 7.00 to
6.65 percent, it would be considered a 35 basis point move.
 
DURATION: A measure of a bond's price sensitivity to changes in interest rates.
To understand the importance of duration, consider that it has a direct impact
on a fund's net asset value. The higher the duration, the greater the effect of
changes in interest rate movements on net asset value.
 
MORTGAGE-BACKED SECURITIES: Securities backed by mortgages. These securities
allow investors to receive payments of interest and principal from the
underlying mortgages. These securities are generally issued by U.S. government
agencies such as, Federal Home Loan Mortgage Corporation (FHLMC, "FreddieMac"),
Federal National Mortgage Association (FNMA, "FannieMae"), and Government
National Mortgage Association (GNMA, "GinnieMae").
 
        WHAT EVENTS OR MARKET CONDITIONS HAD THE GREATEST IMPACT ON
 Q      THE FUND DURING THE FIRST HALF OF THIS YEAR?

        The bond market, in general, has been haunted by the specter
 A      of a strengthening economy. When economic indicators hinted at
        stronger growth--in the range of 4 percent or higher--for the second 
quarter of 1996, it unsettled the market. The bond market has come to 
associate strong economic growth with inflation, which, of course, is always a
concern for fixed-income investors.
 
    Although stronger growth does not assure a return of inflation, interest
rates on long-term Treasuries were driven up by 130 to 140 basis points (or
nearly 1 1/2 percentage points) during the first half of 1996. The market has
been worried that the Federal Reserve Board would decide to raise interest rates
in order to keep the economy's growth rate in check.
 
                                        5
<PAGE>   7
 Q      WHAT ACTIONS DID YOU TAKE TO ADJUST THE FUND'S PORTFOLIO?

        The most significant change was our reduction in the Fund's
 A      duration to around 4.7 years at the end of the period from
        about 5.4 years at the beginning of the year. By shortening the 
duration, we were able to dampen the negative effects of rising interest rates
on the Fund's net asset value.
 
    We had maintained a longer duration throughout most of the rally in 1995, so
we were able to more fully participate in the market's strong performance last
year. We moved decisively to shorten the duration early in 1996, just weeks
before the rally ended and the sell-off began. This defensive posture helped us
sidestep the sell-off and keep the Fund slightly above-average in terms of
relative performance.
    In summary, our goal has been to move toward a less volatile positioning of
the Fund's assets. A shorter duration is part of that strategy. Please refer to
page four for Fund portfolio highlights.
 
 Q      HOW DID THE FUND PERFORM DURING THE PERIOD?

        The Fund's total return (Class A shares at net asset value)
 A      over the six-month period ended June 30, 1996, was -0.87
        percent(1). The Fund ranked 33 out of 60 funds in the U.S. Mortgage 
Fund category, as tracked by Lipper Analytical Services, Inc., for the one-year
period ended June 30, 1996. And consistent with our goal of providing 
shareholders with favorable long-term results, the Fund ranked 8 out of 23
funds for the five-year period, and 5 out of 15 funds for the ten-year period
ended June 30, 1996.* Please refer to the chart on page three for additional
Fund performance results.
 
    Over the same six-month period, the Merrill Lynch 1- to 10-year Treasury
Index generated a total return of 0.15 percent. This index is a broad-based,
unmanaged index that reflects the general performance of Treasury bonds with
maturities of 1 to 10 years. The Lehman Brothers Mortgage Index returned 0.35
percent. This index is a broad-based, unmanaged index which reflects general
performance of mortgage-backed securities. Neither index reflects any
commissions or fees that would be paid by an investor purchasing the securities
they represent. The Merrill Lynch 1- to 10-year Treasury Index was initially
selected as a benchmark for the Fund's performance; additionally the Lehman
Brothers Mortgage Index is being added as an additional comparison for the Fund.
    In terms of current income, the Fund's Class A shares ended the period with
a monthly dividend of $.0900 per share, though the Fund's Board of Trustees
approved a dividend reduction to $.0875 per share, effective July 1, 1996. In
seeking to further diversify the Fund's assets, we have increased the Fund's
position in Treasury securities which has resulted in a decline in the Fund's
earnings potential, as these are lower yielding securities. Based on the Fund's
Class A share maximum offer price as of June 30, 1996, the new dividend level
represents a distribution rate of 7.0 percent. (3)
 
                                        6
<PAGE>   8
 
<TABLE>
<S>     <C>
 Q      WHAT IS YOUR OUTLOOK FOR THE MARKET IN THE MONTHS AHEAD?

        There are signs that the market could enter a period of
 A      stabilization in the near term. The federal budget deficit
        continues to trend downward, and despite a pick-up in economic growth,
inflation numbers remained constructive through the second quarter. There is no
doubt that news of Alan Greenspan's confirmation for a third term as Federal
Reserve Board chairman was favorably received by the marketplace. This signals
a likely continuation of a conservative, anti-inflationary monetary policy; at
the very least, the market will not have to deal with the uncertainty of a new
Fed chairperson.
</TABLE>
 
    Nonetheless, we will continue to be cautious, as the economic environment
fails to provide a clear signal at this time.
 
<TABLE>
<S>     <C>
        HOW HAVE YOU POSITIONED THE PORTFOLIO AS WE MOVE INTO THE LAST
 Q      HALF OF THE YEAR?

        Our goal will continue to be a stabilization of the Fund's
 A      performance by taking steps to increase portfolio diversity
        and reduce risk. We plan to keep the portfolio's duration at the 
shorter end of our target range as we seek to reduce the volatility of our net
asset value and maintain consistent performance.
</TABLE>
 
    Going forward, one of our most significant changes could be in our
allocations among the Treasury and mortgage sectors. Traditionally, we've
weighted the portfolio heavily toward the mortgage sector, usually staying
within the range of 90 to 95 percent in mortgage securities. If bond market
prices begin to firm up, we will shift assets into the Treasury sector,
eventually reaching a mix of about 80 percent mortgage-backed securities and 20
percent Treasury securities. We believe this added diversification could provide
greater portfolio stability in what might be a nervous bond market over the last
half
of the year.
 
[SIG]
Peter W. Hegel
Executive Vice President
Fixed Income Investments

[SIG]
Jack E. Doyle
Portfolio Manager
 
* Lipper Analytical Services, Inc. calculations are based upon changes in net
  asset value with dividends reinvested. Lipper calculations do not include
  sales charges and, if they had, results may have been less favorable.
 
                                              Please see footnotes on page three
 
                                        7
<PAGE>   9
 
                            PORTFOLIO OF INVESTMENTS
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
  Par
 Amount                                                                           Market Value
 (000)                        Description                    Coupon    Maturity      (000)
- ----------------------------------------------------------------------------------------------
<C>        <S>                                               <C>       <C>        <C>
           MORTGAGE BACKED SECURITIES  102.7%
$  1,036   FHLMC............................................ 10.250%    11/01/09   $    1,102
     306   FHLMC............................................ 11.250     09/01/15          339
  20,958   FHLMC............................................  8.000     01/15/21       21,321
  45,788   FHLMC............................................  8.500      Various       46,861
  32,376   FHLMC............................................ 10.000      Various       35,002
  31,683   FHLMC............................................ 11.000      Various       34,960
   5,089   FHLMC (Seasoned).................................  8.500     01/01/16        5,247
  17,373   FHLMC REMIC #14B PAC.............................  9.000     12/15/19       17,903
  40,201   FHLMC REMIC #79C PAC.............................  8.600     10/15/05       41,638
  12,433   FHLMC REMIC #89D.................................  9.000     02/15/21       13,153
  23,277   FHLMC REMIC #92G PAC.............................  7.000     11/15/20       23,237
  13,124   FHLMC REMIC #97G PAC.............................  9.250     11/15/05       13,286
  15,061   FHLMC REMIC #106G PAC............................  8.250     12/15/20       15,765
  11,001   FHLMC REMIC #127D PAC............................  6.000     05/15/20       10,821
  13,550   FHLMC REMIC #163E PAC............................  6.000     01/15/21       12,974
  30,326   FHLMC REMIC #165K PAC............................  6.500     09/15/21       28,991
  32,376   FHLMC REMIC #181E PAC............................  7.000     08/15/21       31,429
  10,894   FHLMC REMIC #1350G PAC...........................  7.500     08/15/19       10,932
      55   FNMA............................................. 12.500     03/01/15           62
   2,444   FNMA............................................. 13.000     06/01/15        2,783
   6,548   FNMA.............................................  8.500     07/01/19        6,802
   3,021   FNMA.............................................  9.500     05/01/20        3,243
 199,129   FNMA.............................................  7.000     10/01/25      191,847
 200,000   FNMA.............................................  7.500     01/01/99      200,936
 235,162   FNMA (b).........................................  6.500      Various      220,168
 208,537   FNMA.............................................  7.000      Various      200,911
  40,041   FNMA.............................................  7.500      Various       39,565
  57,190   FNMA.............................................  8.000      Various       57,794
  10,611   FNMA.............................................  8.500      Various       10,902
   6,329   FNMA.............................................  9.000      Various        6,612
   9,527   FNMA............................................. 10.500      Various       10,480
   9,946   FNMA............................................. 11.000      Various       11,061
   1,894   FNMA............................................. 11.500      Various        2,123
  10,609   FNMA (Seasoned)..................................  9.000      Various       11,183
</TABLE>
 
                                               See Notes to Financial Statements
 
                                        8
<PAGE>   10
 
                      PORTFOLIO OF INVESTMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
  Par
 Amount                                                                           Market Value
 (000)                        Description                    Coupon    Maturity      (000)
- ----------------------------------------------------------------------------------------------
<C>        <S>                                               <C>       <C>        <C>
           MORTGAGE BACKED SECURITIES  (CONTINUED)
$    903   FNMA REMIC #89-49C PAC...........................  8.900%    11/25/17   $      901
   5,496   FNMA REMIC #89-85D PAC...........................  7.600     05/25/18        5,527
  11,900   FNMA REMIC #89-94G PAC...........................  7.500     12/25/19       11,938
   3,619   FNMA REMIC #89-97C...............................  9.000     01/25/15        3,628
  18,085   FNMA REMIC #90-12G PAC...........................  4.500     02/25/20       14,953
  20,517   FNMA REMIC #90-71H PAC...........................  8.500     06/25/20       21,173
   7,221   FNMA REMIC #90-97E PAC...........................  7.000     08/25/19        7,234
  15,000   FNMA REMIC #93-4HB PAC........................... 11.000     01/25/19       16,453
 133,060   GNMA.............................................  7.000      Various      127,652
 385,943   GNMA.............................................  7.500      Various      381,064
 293,809   GNMA.............................................  8.000      Various      296,561
  60,539   GNMA.............................................  8.500      Various       62,598
 541,609   GNMA (c).........................................  9.000      Various      570,883
  64,018   GNMA.............................................  9.500      Various       69,019
  15,490   GNMA............................................. 10.000      Various       16,971
  22,557   GNMA............................................. 10.500      Various       24,869
   2,391   GNMA............................................. 11.000      Various        2,671
   3,821   GNMA............................................. 11.500      Various        4,318
   2,598   GNMA............................................. 12.000      Various        2,967
   2,556   GNMA............................................. 12.500      Various        2,945
   1,702   GNMA............................................. 13.000      Various        1,971
 215,585   GNMA (Seasoned)..................................  9.000      Various      227,507
     943   GNMA GPM......................................... 12.250      Various        1,082
     229   GNMA II..........................................  8.500      Various          235
   8,237   GNMA II.......................................... 10.500      Various        8,958
   5,112   GNMA II.......................................... 11.000      Various        5,621
   2,265   GNMA II.......................................... 11.500      Various        2,514
   2,235   GNMA II.......................................... 12.000      Various        2,505
   1,339   GNMA II.......................................... 12.500      Various        1,512
                                                                                   ----------
                                                                                    3,237,663
                                                                                   ----------
</TABLE>
 
                                               See Notes to Financial Statements
 
                                        9
<PAGE>   11
 
                      PORTFOLIO OF INVESTMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
  Par
 Amount                                                                           Market Value
 (000)                        Description                    Coupon    Maturity      (000)
- ----------------------------------------------------------------------------------------------
<C>        <S>                                               <C>       <C>        <C>
           U.S. TREASURY SECURITIES  5.3%
$ 15,000   U.S. T-Bonds..................................... 13.125%    05/15/01   $   19,132
   5,000   U.S. T-Bonds (c)................................. 13.750     08/15/04        7,187
  55,000   U.S. T-Bonds..................................... 14.000     11/15/11       83,932
  40,000   U.S. T-Bonds..................................... 12.000     08/15/13       56,507
                                                                                   ----------
                                                                                      166,758
                                                                                   ----------
TOTAL LONG-TERM INVESTMENTS  108.0%
  (Cost $3,387,684) (a).........................................................    3,404,421
REPURCHASE AGREEMENT  0.8%
  UBS Securities (U.S. Treasury Note, $24,008,000 par, 7.75% coupon, due
  01/31/00,   dated 06/28/96, to be sold on 07/01/96 at $25,313,428)............       25,302
LIABILITIES IN EXCESS OF OTHER ASSETS  (8.8%)...................................     (277,552)
                                                                                   ----------
NET ASSETS  100%................................................................   $3,152,171
                                                                                   ==========
</TABLE>
 
(a) At June 30, 1996, cost for federal income tax purposes is $3,387,683,900;
    the aggregate gross unrealized appreciation is $67,464,877 and the aggregate
    gross unrealized depreciation is $50,148,414, resulting in net unrealized
    appreciation including open option transactions of $17,316,463.
 
(b) Securities purchased pursuant to a dollar roll transaction.
 
(c) Assets segregated as collateral for dollar roll and open option
    transactions.
 
                                               See Notes to Financial Statements
 
                                       10
<PAGE>   12
                      STATEMENT OF ASSETS AND LIABILITIES
 
                                 June 30, 1996
                                  (Unaudited)
    All amounts, except for Maximum Offering Price information, reported in
                                   thousands
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                                                                         <C>
ASSETS:
Investments, at Market Value (Cost $3,387,684) (Note 1)...................  $3,404,421
Short-Term Investments (Note 1)...........................................      25,302
Receivables:
  Securities Sold.........................................................     216,194
  Interest................................................................      25,538
  Fund Shares Sold........................................................         932
Options at Market Value (Net premiums paid of $827) (Note 5)..............       1,406
Other.....................................................................         305
                                                                            ----------
    Total Assets..........................................................   3,674,098
                                                                            ----------
LIABILITIES:
Payables:
  Securities Purchased (Note 4)...........................................     502,795
  Income Distributions....................................................      10,039
  Fund Shares Repurchased.................................................       3,578
  Distributors and Affiliates (Notes 2 and 7).............................       2,323
  Investment Advisory Fee (Note 2)........................................       1,314
  Custodian Bank..........................................................         420
Accrued Expenses..........................................................       1,391
Deferred Compensation and Retirement Plans (Note 2).......................          67
                                                                            ----------
    Total Liabilities.....................................................     521,927
                                                                            ----------
NET ASSETS................................................................  $3,152,171
                                                                            ==========
NET ASSETS CONSIST OF:
Capital (Note 3)..........................................................  $3,616,116
Net Unrealized Appreciation on Securities.................................      17,316
Accumulated Undistributed Net Investment Income...........................       2,377
Accumulated Net Realized Loss on Securities...............................    (483,638)
                                                                            ----------
NET ASSETS................................................................  $3,152,171
                                                                            ==========
MAXIMUM OFFERING PRICE PER SHARE:
  Class A Shares:
    Net asset value and redemption price per share (Based on net assets of
    $2,700,424,594 and 189,146,785 shares of capital stock issued and
    outstanding) (Note 3).................................................  $    14.28
    Maximum sales charge (4.75%* of offering price).......................         .71
                                                                            ----------
    Maximum offering price to public......................................  $    14.99
                                                                            ==========
  Class B Shares:
    Net asset value and offering price per share (Based on net assets of
    $436,579,299 and 30,596,881 shares of capital stock issued and
    outstanding) (Note 3).................................................  $    14.27
                                                                            ==========
  Class C Shares:
    Net asset value and offering price per share (Based on net assets of
      $15,166,777 and 1,062,917 shares of capital stock issued and
      outstanding) (Note 3)...............................................  $    14.27
                                                                            ==========
</TABLE>
 
* On sales of $100,000 or more, the sales charge will be reduced.
 
                                               See Notes to Financial Statements
 
                                       11
<PAGE>   13
                            STATEMENT OF OPERATIONS
 
                     For the Six Months Ended June 30, 1996
                                  (Unaudited)
                       All amounts reported in thousands
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                                                                          <C>
INVESTMENT INCOME:
Interest...................................................................  $ 131,430
Fee Income (Note 4)........................................................      3,467
                                                                             ---------
    Total Income...........................................................    134,897
                                                                             ---------
EXPENSES:
Investment Advisory Fee (Note 2)...........................................      8,327
Distribution (12b-1) and Service Fees (Allocated to Classes A, B and C of
  $2,439, $2,242 and $71, respectively) (Note 7)...........................      4,752
Shareholder Services (Note 2)..............................................      2,255
Custody....................................................................      1,003
Legal (Note 2).............................................................        148
Trustees Fees and Expenses (Note 2)........................................         23
Other......................................................................        523
                                                                             ---------
    Total Operating Expenses...............................................     17,031
    Interest Expense (Note 4)..............................................        562
                                                                             ---------
    Total Expenses.........................................................     17,593
    Less Expenses Reimbursed...............................................          5
                                                                             ---------
    Net Expenses...........................................................     17,588
                                                                             ---------
NET INVESTMENT INCOME......................................................  $ 117,309
                                                                             =========
REALIZED AND UNREALIZED GAIN/LOSS ON SECURITIES:
Realized Gain/Loss on Securities:
  Investments..............................................................  $ (22,743)
  Options..................................................................     (6,918)
  Futures..................................................................       (284)
                                                                             ---------
Net Realized Loss on Securities............................................    (29,945)
                                                                             ---------
Unrealized Appreciation/Depreciation on Securities:
  Beginning of the Period..................................................    137,484
                                                                             ---------
  End of the Period:
    Investments............................................................     16,737
    Options................................................................        579
                                                                             ---------
                                                                                17,316
                                                                             ---------
Net Unrealized Depreciation on Securities During the Period................   (120,168)
                                                                             ---------
NET REALIZED AND UNREALIZED LOSS ON SECURITIES.............................  $(150,113)
                                                                             =========
NET DECREASE IN NET ASSETS FROM OPERATIONS.................................  $ (32,804)
                                                                             =========
</TABLE>
 
                                               See Notes to Financial Statements
 
                                       12
<PAGE>   14
                       STATEMENT OF CHANGES IN NET ASSETS
 
                   For the Six Months Ended June 30, 1996 and
                        the Year Ended December 31, 1995
                                  (Unaudited)
                       All amounts reported in thousands
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                      Six Months Ended          Year Ended
                                                         June 30, 1996   December 31, 1995
- ------------------------------------------------------------------------------------------
<S>                                                           <C>                <C>
FROM INVESTMENT ACTIVITIES:
Operations:
Net Investment Income.................................        $ 117,309          $ 260,233
Net Realized Loss on Securities.......................          (29,945)            (3,772)
Net Unrealized Appreciation/Depreciation on
  Securities During the Period........................         (120,168)           299,945
                                                             ----------         ----------
Change in Net Assets from Operations..................          (32,804)           556,406
Distributions from Net Investment Income*.............         (120,263)          (256,066)
                                                             ----------         ----------
NET CHANGE IN NET ASSETS FROM INVESTMENT ACTIVITIES...         (153,067)           300,340
                                                             ----------         ----------
FROM CAPITAL TRANSACTIONS (NOTE 3):
Proceeds from Shares Sold.............................           58,299            114,233
Net Asset Value of Shares Issued Through Dividend
  Reinvestment........................................           58,973            125,466
Cost of Shares Repurchased............................         (254,841)          (469,431)
                                                             ----------         ----------
NET CHANGE IN NET ASSETS FROM CAPITAL TRANSACTIONS....         (137,569)          (229,732)
                                                             ----------         ----------
TOTAL INCREASE/DECREASE IN NET ASSETS.................         (290,636)            70,608
NET ASSETS:
Beginning of the Period...............................        3,442,807          3,372,199
                                                             ----------         ----------
End of the Period (Including undistributed net
  investment income of $2,377 and $4,934,
  respectively).......................................       $3,152,171         $3,442,807
                                                             ==========         ==========
</TABLE>
 
<TABLE>
<CAPTION>
                                             Six Months Ended          Year Ended
         *Distributions by Class                June 30, 1996   December 31, 1995
         -------------------------------------------------------------------------
         <S>                                        <C>                <C>
         Distributions from Net Investment
           Income:
           Class A Shares....................        $(104,712)         $(224,640)
           Class B Shares....................          (15,076)           (30,640)
           Class C Shares....................             (475)              (786)
                                                     ---------          ---------
                                                     $(120,263)         $(256,066)
                                                     =========          =========
</TABLE>
 
                                               See Notes to Financial Statements
 
                                       13
<PAGE>   15
                              FINANCIAL HIGHLIGHTS
 
       The following schedule presents financial highlights for one share
     of the Fund outstanding throughout the periods indicated. (Unaudited)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                    Six Months                 Year Ended December 31
                                       Ended          ------------------------------------------
          Class A Shares           June 30, 1996      1995        1994        1993        1992
<S>                                <C>              <C>         <C>         <C>         <C>
- ------------------------------------------------------------------------------------------------
Net Asset Value, Beginning of the
  Period...........................      $ 14.950   $ 13.698    $ 15.662    $ 15.720    $ 16.130
                                         --------   --------    --------    --------    --------
Net Investment Income..............          .529      1.111       1.177       1.286       1.365
Net Realized and Unrealized
  Gain/Loss on Securities..........         (.662)     1.233      (1.965)      (.060)      (.407)
                                          ------      ------      ------      ------      ------
Total from Investment Operations...         (.133)     2.344       (.788)      1.226        .958
Less Distributions from and in
  Excess of Net Investment
  Income...........................          .540      1.092       1.176       1.284       1.368
                                          ------      ------      ------      ------      ------
Net Asset Value, End of the
  Period...........................      $ 14.277   $ 14.950    $ 13.698    $ 15.662    $ 15.720
                                         ========   ========    ========    ========    ========
Total Return*(a)...................         (.87%)**   17.61%     (5.10%)      7.95%       6.27%
Net Assets at End of the Period (In
  millions)........................      $2,700.4   $2,962.9    $2,924.4    $3,653.6    $3,571.7
Ratio of Operating Expenses to
  Average Net Assets*..............          .92%       .93%        .92%        .87%        .77%
Ratio of Interest Expense to
  Average Net Assets (Note 4)......          .03%       .27%        .08%         N/A         N/A
Ratio of Net Investment Income to
  Average Net Assets*..............         7.34%      7.68%       8.13%       8.08%       8.64%
Portfolio Turnover (Excluding
  Dollar Rolls and Forward
  Transactions)....................           56%**      63%         44%         67%         11%
</TABLE>
 
*  If certain expenses had not been assumed by VKAC, total return would have
   been lower and the ratios would have been as follows:
 
<TABLE>
<CAPTION>
<S>                                <C>              <C>         <C>         <C>         <C>
   Ratio of Operating Expenses to
     Average Net Assets............          .93%       .93%          --          --          --
   Ratio of Net Investment Income
     to Average Net Assets.........         7.34%      7.68%          --          --          --
</TABLE>
 
** Non-Annualized
 
(a) Total return is based upon net asset value which does not include payment of
    the maximum sales charge or the contingent deferred sales charge.
 
N/A = Prior to 1994, interest expense was immaterial and subsequently netted
      against interest income.
 
                                               See Notes to Financial Statements
 
                                       14
<PAGE>   16
                        FINANCIAL HIGHLIGHTS (CONTINUED)
 
       The following schedule presents financial highlights for one share
     of the Fund outstanding throughout the periods indicated. (Unaudited)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                August 24, 1992
                               Six Months         Year Ended December 31       (Commencement of
                                  Ended        -----------------------------   Distribution) to
       Class B Shares         June 30, 1996     1995       1994       1993     December 31, 1992
- --------------------------------------------------------------------------------------------------
<S>                                 <C>       <C>        <C>        <C>         <C>
Net Asset Value, Beginning                                                     
  of the Period.............        $14.948    $13.694    $15.643    $15.709      $15.983
                                    -------    -------    -------    -------      -------
Net Investment Income.......           .468       .991      1.055      1.149         .425
Net Realized and Unrealized                                                    
  Gain/Loss on Securities...          (.661)     1.241     (1.964)     (.063)       (.263)
                                    -------    -------    -------    -------      -------
Total from Investment                                                          
  Operations................          (.193)     2.232      (.909)     1.086         .162
Less Distributions from and                                                    
  in Excess of Net                                                             
  Investment Income.........           .486       .978      1.040      1.152         .436
                                    -------    -------    -------    -------      -------
Net Asset Value, End of the                                                    
  Period....................        $14.269    $14.948    $13.694    $15.643      $15.709
                                    =======    =======    =======    =======      =======
Total Return* (a)...........         (1.30%)**  16.78%     (5.93%)     7.01%        1.64%**
Net Assets at End of the                                                       
  Period (In millions)......        $ 436.6    $ 466.7    $ 436.3    $ 474.7      $ 103.1
Ratio of Operating Expenses                                                    
  to Average Net Assets*....          1.75%      1.75%      1.74%      1.73%        1.61%
Ratio of Interest Expense to                                                   
  Average Net Assets (Note                                                     
  4)........................           .03%       .27%       .09%        N/A          N/A
Ratio of Net Investment                                                        
  Income to Average Net                                                        
  Assets*...................          6.50%      6.85%      7.29%      7.00%        6.16%
Portfolio Turnover                                                             
  (Excluding Dollar Rolls                                                      
  and Forward                                                                  
  Transactions).............            56%**      63%        44%        67%         111%
</TABLE>                                                                       
 
*  If certain expenses had not been assumed by VKAC, total return would have
   been lower and the ratios would have been as follows:
 
<TABLE>
<S>                                 <C>        <C>         <C>          <C>         <C>
   Ratio of Operating
     Expenses to Average Net
     Assets.................          1.76%      1.75%         --         --           --
   Ratio of Net Investment
     Income to Average Net
     Assets.................          6.50%      6.85%         --         --           --
</TABLE>
 
**    Non-Annualized
 
(a)   Total return is based upon net asset value which does not include payment
      of the maximum sales charge or the contingent deferred sales charge.
 
N/A = Prior to 1994, interest expense was immaterial and subsequently netted
      against interest income.
 
                                               See Notes to Financial Statements
 
                                       15
<PAGE>   17
                        FINANCIAL HIGHLIGHTS (CONTINUED)
 
       The following schedule presents financial highlights for one share
     of the Fund outstanding throughout the periods indicated. (Unaudited)
- --------------------------------------------------------------------------------
 
<TABLE>
<CAPTION>
                                                                                    August 13, 1993
                         Six Months                                                (Commencement of
                            Ended           Year Ended           Year Ended        Distribution) to
     Class C Shares     June 30, 1996    December 31, 1995    December 31, 1994    December 31, 1993
- ------------------------------------------------------------------------------------------------------
<S>                      <C>              <C>                  <C>                  <C>
Net Asset Value,
  Beginning of the
  Period................       $14.948             $13.693              $15.626              $16.000
                               -------             -------              -------              -------
  Net Investment
    Income..............          .463                .996                1.063                 .433
  Net Realized and
    Unrealized Gain/Loss
    on Securities.......         (.656)              1.237               (1.956)               (.364)
                               -------             -------              -------              -------
Total from Investment
  Operations............         (.193)              2.233                (.893)                .069
Less Distributions from
  and in Excess of Net
  Investment Income.....          .486                .978                1.040                 .443
                               -------             -------              -------              -------
Net Asset Value, End of
  the Period............       $14.269             $14.948              $13.693              $15.626
                               =======             =======              =======              =======
Total Return (a)........        (1.30%)*            16.78%               (5.86%)                .46%*
Net Assets at End of the
  Period (In
  millions).............       $  15.2             $  13.3              $  11.4              $   9.6
Ratio of Operating
  Expenses to Average
  Net Assets............         1.75%**             1.75%**              1.74%                1.71%
Ratio of Interest
  Expense to Average Net
  Assets
  (Note 4)..............          .03%                .27%                 .10%                  N/A
Ratio of Net Investment
  Income to Average Net
  Assets................         6.49%**             6.86%**              7.29%                6.42%
Portfolio Turnover
  (Excluding Dollar
  Rolls and Forward
  Transactions).........           56%*                63%                  44%                  67%
</TABLE>
 
 * Non-Annualized
 
** The Ratios of Expenses to Average Net Assets and Net Investment Income to
   Average Net Assets were not affected by the assumption of certain expenses by
   VKAC.
 
(a) Total return is based upon net asset value which does not include payment of
    the maximum sales charge or the contingent deferred sales charge.
 
N/A = Prior to 1994, interest expense was immaterial and subsequently netted
      against interest income.
 
                                               See Notes to Financial Statements
 
                                       16
<PAGE>   18
 
                         NOTES TO FINANCIAL STATEMENTS
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
1. SIGNIFICANT ACCOUNTING POLICIES
 
Van Kampen American Capital U.S. Government Fund (the "Fund") is organized as a
series of Van Kampen American Capital U.S. Government Trust (the "Trust"), a
Delaware business trust and is registered as a diversified open-end management
investment company under the Investment Company Act of 1940, as amended. The
Fund's investment objective is to provide a high level of current income, with
liquidity and safety of principal. The Fund commenced investment operations on
May 31, 1984. The distribution of the Fund's Class B and Class C shares
commenced on August 24, 1992 and August 13, 1993, respectively. On May 2, 1995,
all Class D shareholders redeemed their shares and the class was eliminated. The
Fund will no longer offer Class D shares.
 
    The following is a summary of significant accounting policies consistently
followed by the Trust in the preparation of its financial statements. The
preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities and disclosure of
contingent assets and liabilities at the date of the financial statements and
the reported amounts of revenues and expenses during the reporting period.
Actual results could differ from those estimates.
 
A. SECURITY VALUATION--Investments are stated at value using market quotations
or, if such valuations are not available, estimates obtained from yield data
relating to instruments or securities with similar characteristics in accordance
with procedures established in good faith by the Board of Trustees. Short-term
securities with remaining maturities of less than 60 days are valued at
amortized cost.
 
B. SECURITY TRANSACTIONS--Security transactions are recorded on a trade date
basis. Realized gains and losses are determined on an identified cost basis. The
Fund may purchase and sell securities on a "when issued" or "delayed delivery"
basis, with settlement to occur at a later date. The value of the security so
purchased is subject to market fluctuations during this period. The Fund will
maintain, in a segregated account with its custodian, assets having an aggregate
value at least equal to the amount of the when issued or delayed delivery
purchase commitments until payment is made.
 
    A repurchase agreement is a short-term investment in which the Fund acquires
ownership of a debt security and the seller agrees to repurchase the security at
a future time and specified price. Repurchase agreements are collateralized by
the underlying debt security. The Fund will make payment for such securities
only upon physical delivery or evidence of book entry transfer to the account of
the custodian bank. The seller is
 
                                       17
<PAGE>   19
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
required to maintain the value of the underlying security at not less than the
repurchase proceeds due the Fund.
 
C. INVESTMENT INCOME--Interest income is recorded on an accrual basis. Original
issue discounts on securities purchased are amortized over the expected life of
each applicable security.
 
D. FEDERAL INCOME TAXES--It is the Fund's policy to comply with the requirements
of the Internal Revenue Code applicable to regulated investment companies and to
distribute substantially all of its taxable income to its shareholders.
Therefore, no provision for federal income taxes is required.
 
    The Fund intends to utilize provisions of the federal income tax laws which
allow it to carry a realized capital loss forward for eight years following the
year of loss and offset such losses against any future realized capital gains.
At December 31, 1995, the Fund had an accumulated capital loss carryforward for
tax purposes of $453,692,887. Of this amount, $157,069,720, $50,594,575,
$6,272,412, $8,800,432, $45,902,032, $181,281,942 and $3,771,774 will expire on
December 31, 1996, 1997, 1998, 2000, 2001, 2002 and 2003, respectively.
 
E. DISTRIBUTION OF INCOME AND GAINS--The Fund declares daily and pays monthly
dividends from net investment income. Net realized gains, if any, are
distributed annually. Distributions from net realized gains for book purposes
may include short-term capital gains, which are included as ordinary income for
tax purposes.
 
    During the period, $396,573, representing the reversal of prior years'
permanent differences related to the recognition of income on certain securities
between book and tax reporting purposes, was reclassified from Class A share
capital to undistributed net investment income.
 
                                       18
<PAGE>   20
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
2. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS WITH AFFILIATES
Under the terms of the Fund's Investment Advisory Agreement, Van Kampen American
Capital Investment Advisory Corp. (the "Adviser") will provide investment advice
and facilities to the Fund for an annual fee payable monthly as follows:
 
<TABLE>
<CAPTION>
                   AVERAGE NET ASSETS                    % PER ANNUM
- ---------------------------------------------------------------------
<S>                                                      <C>
First $500 million.......................................    .550 of 1%
Next $500 million........................................    .525 of 1%
Next $2 billion..........................................    .500 of 1%
Next $2 billion..........................................    .475 of 1%
Next $2 billion..........................................    .450 of 1%
Next $2 billion..........................................    .425 of 1%
Thereafter...............................................    .400 of 1%
</TABLE>
 
    Certain legal expenses are paid to Skadden, Arps, Slate, Meagher & Flom,
counsel to the Fund, of which a trustee of the Fund is an affiliated person.
 
    For the six months ended June 30, 1996, the Fund recognized expenses of
approximately $135,000 representing Van Kampen American Capital Distributors,
Inc.'s or its affiliates' (collectively "VKAC") cost of providing accounting,
cash management and legal services to the Fund.
 
    ACCESS Investor Services, Inc. ("ACCESS"), an affiliate of the Adviser,
serves as the shareholder servicing agent of the Fund. For the six months ended
June 30, 1996, the Fund recognized expenses of approximately $1,757,200,
representing ACCESS' cost of providing transfer agency and shareholder services
plus a profit.
 
    Additionally, for the six months ended June 30, 1996, the Fund reimbursed
VKAC approximately $411,300 related to the cost of consolidating the VKAC
open-end fund complex. The reimbursement represents savings realized by the Fund
as a result of the consolidation.
 
    Certain officers and trustees of the Fund are also officers and directors of
VKAC. The Fund does not compensate its officers or trustees who are officers of
VKAC.
 
    The Fund has implemented deferred compensation and retirement plans for its
trustees. Under the deferred compensation plan, trustees may elect to defer all
or a portion of their compensation to a later date. The retirement plan covers
those trustees who are not officers of VKAC.
 
    At June 30, 1996, VKAC owned 105 and 100 shares of Classes B and C,
respectively.
 
                                       19
<PAGE>   21
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
3. CAPITAL TRANSACTIONS
 
The Fund has outstanding three classes of common shares, Classes A, B and C,
each with a par value of $.01 per share. There are an unlimited number of shares
of each class authorized. At June 30, 1996, capital aggregated $3,109,810,910,
$489,822,457 and $16,483,111 for Class A, B and C, respectively. For the six
months ended June 30, 1996, transactions were as follows:
 
<TABLE>
<CAPTION>
                                               SHARES           VALUE
- -------------------------------------------------------------------------
<S>                                          <C>            <C>
Sales:
  Class A..................................    2,001,727    $  29,179,975
  Class B..................................    1,747,251       25,468,571
  Class C..................................      249,522        3,650,070
                                             -----------    -------------
Total Sales................................    3,998,500    $  58,298,616
                                             ===========    =============
Dividend Reinvestment:
  Class A..................................    3,554,016    $  51,501,430
  Class B..................................      496,059        7,183,810
  Class C..................................       19,878          287,500
                                             -----------    -------------
Total Dividend Reinvestment................    4,069,953    $  58,972,740
                                             ===========    =============
Repurchases:
  Class A..................................  (14,595,647)   $(211,877,151)
  Class B..................................   (2,864,815)     (41,587,691)
  Class C..................................      (94,565)      (1,375,609)
                                             -----------    -------------
Total Repurchases..........................  (17,555,027)   $(254,840,451)
                                             ===========    =============
</TABLE>
 
                                       20
<PAGE>   22
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
    At December 31, 1995, capital aggregated $3,241,403,229, $498,757,767 and
$13,921,150 for Classes A, B and C, respectively. For the year ended December
31, 1995, transactions were as follows:
 
<TABLE>
<CAPTION>
                                                  SHARES            VALUE
- -------------------------------------------------------------------------
<S>                                          <C>            <C>
Sales:
  Class A..................................    4,450,487    $  64,561,951
  Class B..................................    3,196,962       46,404,360
  Class C..................................      223,253        3,266,997
  Class D..................................          -0-              -0-
                                             -----------    -------------
Total Sales................................    7,870,702    $ 114,233,308
                                             ===========    =============
Dividend Reinvestment:
  Class A..................................    7,595,317    $ 110,358,313
  Class B..................................    1,006,560       14,629,660
  Class C..................................       32,914          478,345
  Class D..................................          -0-                4
                                             -----------    -------------
Total Dividend Reinvestment................    8,634,791    $ 125,466,322
                                             ===========    =============
Repurchases:
  Class A..................................  (27,345,845)   $(396,421,409)
  Class B..................................   (4,846,397)     (70,074,798)
  Class C..................................     (202,889)      (2,933,194)
  Class D..................................         (114)          (1,717)
                                             -----------    -------------
Total Repurchases..........................  (32,395,245)   $(469,431,118)
                                             ===========    =============
</TABLE>
 
    Class B and C shares are offered without a front end sales charge, but are
subject to a contingent deferred sales charge (CDSC). The CDSC will be imposed
on most redemptions made within six years of the purchase for Class B and one
year of the purchase for Class C as detailed in the following schedule. The
Class B and C shares bear
 
                                       21
<PAGE>   23
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
the expense of their respective deferred sales arrangements, including higher
distribution and service fees and incremental transfer agency costs.
 
<TABLE>
<CAPTION>
                                                            CONTINGENT
                                                             DEFERRED
                                                           SALES CHARGE
                                                        ------------------
YEAR OF REDEMPTION                                      CLASS B    CLASS C
- --------------------------------------------------------------------------
<S>                                                     <C>        <C>
First.................................................    4.00%      1.00%
Second................................................    3.75%       None
Third.................................................    3.50%       None
Fourth................................................    2.50%       None
Fifth.................................................    1.50%       None
Sixth.................................................    1.00%       None
Seventh and Thereafter................................     None       None
</TABLE>
 
    For the six months ended June 30, 1996, VKAC, as Distributor for the Fund,
received commissions on sales of the Fund's Class A shares of approximately
$99,300 and CDSC on redeemed shares of approximately $745,000. Sales charges do
not represent expenses of the Fund.
 
4. INVESTMENT TRANSACTIONS
 
During the period, the cost of purchases and proceeds from sales on investments,
including principal paydowns and dollar rolls, excluding short-term investments,
for the six months ended June 30, 1996, were $2,164,916,625 and $3,038,385,283,
respectively.
 
    The Fund utilizes investment techniques called "dollar rolls," "forward
transactions" and reverse repurchase agreements for leverage purposes. In a
dollar roll, the Fund sells securities for delivery in the current month and
simultaneously contracts to repurchase, typically in 30 to 60 days,
substantially similar (same type, coupon and maturity) securities on a specified
future date from the same party at an agreed upon price which is less than the
sales price. The Fund is compensated by the difference between the current sales
price and the forward price for the future purchase.
 
    In a forward transaction, the Fund purchases securities for delivery in the
current month and subsequently agrees to postpone delivery until the next
available delivery date, usually the next month. The Fund receives a fee as
compensation for postponing delivery. Fee income on these transactions is
recognized at the offsetting transaction's trade date for dollar rolls and the
date when settlement is postponed for forward transactions. At June 30, 1996,
the Fund had open dollar roll and/or forward transactions with a market
 
                                       22
<PAGE>   24
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
value of $93.6 million and related assets segregated for these open purchases of
$568.1 million.
 
    In a reverse repurchase agreement, the Fund sells securities and agrees to
repurchase them at a mutually agreed upon date and price. During the reverse
repurchase agreement period, the Fund continues to receive principal and
interest payments on these securities but pays interest to the counter-party
based upon a short-term interest rate. The average daily balance of reverse
repurchase agreements during the period was approximately $22.9 million with an
average interest rate of 4.93%. At June 30, 1996, there were no reverse
repurchase agreements outstanding.
 
5. DERIVATIVE FINANCIAL INSTRUMENTS
 
A derivative financial instrument in very general terms refers to a security
whose value is "derived" from the value of an underlying asset, reference rate
or index.
 
    The Fund has a variety of reasons to use derivative instruments, such as to
attempt to protect the Fund against possible changes in the market value of its
portfolio and to manage the portfolio's effective yield, maturity and duration.
All of the Fund's portfolio holdings, including derivative instruments, are
marked to market each day with the change in value reflected in the unrealized
appreciation/depreciation on securities. Upon disposition, a realized gain or
loss is recognized accordingly, except for exercised option contracts where the
recognition of gain or loss is postponed until the disposal of the security
underlying the option contract.
 
    Summarized below are the specific types of derivative financial instruments
used by the Fund.
 
A. OPTION CONTRACTS--An option contract gives the buyer the right, but not the
obligation to buy (call) or sell (put) an underlying item at a fixed exercise
price during a specified period. These contracts are generally used by the Fund
to manage the portfolio's effective maturity and duration.
 
    Transactions in options for the six months ended June 30, 1996, were as
follows:
 
<TABLE>
<CAPTION>
                                                 CONTRACTS      PREMIUM
- --------------------------------------------------------------------------
<S>                                              <C>          <C>
Outstanding at December 31, 1995...............      2,000    $ (1,926,233)
Options Written and Purchased (Net)............     22,000     (22,604,431)
Options Terminated in Closing Transactions
  (Net)........................................    (21,000)     22,687,806
Options Expired (Net)..........................     (2,000)      1,016,070
                                                   -------    ------------
Outstanding at June 30, 1996...................      1,000    $   (826,788)
                                                   =======    ============
</TABLE>
 
                                       23
<PAGE>   25
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
    The related futures contracts of the outstanding option transactions as of
June 30, 1996, and the description and market value is as follows:
 
<TABLE>
<CAPTION>
                                             EXPIRATION MONTH/        MARKET VALUE
                                CONTRACTS       EXERCISE PRICE          OF OPTIONS
- ----------------------------------------------------------------------------------
<S>                             <C>          <C>                  <C>
Sept. 1996 US Treasury Bond
  Future-Purchased Calls........     1,000             Aug/109          $1,406,250
                                    ======                              ==========
</TABLE>
 
B. FUTURES CONTRACTS--A futures contract is an agreement involving the delivery
of a particular asset on a specified future date at an agreed upon price. The
Trust generally invests in futures on U.S. Treasury Bonds and typically closes
the contract prior to the delivery date. These contracts are generally used to
manage the portfolio's effective maturity and duration.
 
    Upon entering into futures contracts, the Fund maintains, in a segregated
account with its custodian, securities with a value equal to its obligation
under the futures contracts. During the period the futures contract is open,
payments are received from or made to the broker based upon changes in the value
of the contract (the variation margin). The cost of securities acquired through
delivery under a contract is adjusted by the unrealized gain or loss on the
contract.
 
    Transactions in futures contracts for the six months ended June 30, 1996,
were as follows:
 
<TABLE>
<CAPTION>
                                                             CONTRACTS
- ----------------------------------------------------------------------
<S>                                                          <C>
Outstanding at December 31, 1995.............................       -0-
Futures Opened...............................................       750
Futures Closed...............................................      (750)
                                                                  ----
Outstanding at June 30, 1996.................................       -0-
                                                                  ====
</TABLE>
 
6. MORTGAGE BACKED SECURITIES
 
A Mortgage Backed Security (MBS) is a pass-through security created by pooling
mortgages and selling participations in the principal and interest payments
received from borrowers. Most of these securities are guaranteed by federally
sponsored agencies-- Government National Mortgage Association (GNMA), Federal
National Mortgage Association (FNMA) or Federal Home Loan Mortgage Corporation
(FHLMC).
 
    A Collateralized Mortgage Obligation (CMO) is a bond which is collateralized
by a pool of MBS's. The Fund also invests in REMIC's (Real Estate Mortgage
Investment Conduit) which are simply another form of CMO. These MBS pools are
divided into classes or
 
                                       24
<PAGE>   26
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           June 30, 1996 (Unaudited)
- --------------------------------------------------------------------------------
 
tranches with each class having its own characteristics. For instance, a PAC
(Planned Amortization Class) is a specific class of mortgages which over its
life will generally have the most stable cash flows and the lowest prepayment
risk. A GPM (Graduated Payment Mortgage) is a negative amortization mortgage
where the payment amount gradually increases over the life of the mortgage. The
early payment amounts are not sufficient to cover the interest due and,
therefore, the unpaid interest is added to the principal, thus increasing the
borrower's mortgage balance.
 
    An Interest Only security is another class of MBS representing ownership in
the cash flows of the interest payments made from a specified pool of MBS. The
cash flow on this instrument decreases as the mortgage principal balance is
repaid by the borrower.
 
7. DISTRIBUTION AND SERVICE PLANS
 
The Fund and its shareholders have adopted a distribution plan pursuant to Rule
12b-1 under the Investment Company Act of 1940 and a service plan (collectively
the "Plans"). The Plans govern payments for the distribution of the Fund's
shares, ongoing shareholder services and maintenance of shareholder accounts.
 
    Annual fees under the Plans of up to .25% of Class A shares and 1.00% each
of Class B and Class C shares are accrued daily. Included in these fees for the
six months ended June 30, 1996, are payments to VKAC of approximately
$1,734,300.
 
                                       25
<PAGE>   27
 
                FUNDS DISTRIBUTED BY VAN KAMPEN AMERICAN CAPITAL
 
GLOBAL AND
INTERNATIONAL
   Global Equity Fund
   Global Government Securities Fund
   Global Managed Assets Fund
   Short-Term Global Income Fund
   Strategic Income Fund
 
EQUITY
Growth
   Aggressive Growth Fund
   Emerging Growth Fund
   Enterprise Fund
   Pace Fund
Growth & Income
   Balanced Fund
   Comstock Fund
   Equity Income Fund
   Growth and Income Fund
   Harbor Fund
   Real Estate Securities Fund
   Utility Fund
 
FIXED INCOME
   Corporate Bond Fund
   Government Securities Fund
   High Income Corporate Bond Fund
   High Yield Fund
   Limited Maturity Government Fund
   Prime Rate Income Trust
   Reserve Fund
   U.S. Government Fund
   U.S. Government Trust for Income
 
TAX-FREE
   California Insured Tax Free Fund
   Florida Insured Tax Free
     Income Fund
   High Yield Municipal Fund
   Insured Tax Free Income Fund
   Intermediate Term Municipal
     Income Fund
   Municipal Income Fund
   New Jersey Tax Free Income Fund
   New York Tax Free Income Fund
   Pennsylvania Tax Free Income Fund
   Tax Free High Income Fund
   Tax Free Money Fund
   Texas Tax Free Income Fund
 
THE GOVETT FUNDS
   Emerging Markets Fund
   Global Income Fund
   International Equity Fund
   Latin America Fund
   Pacific Strategy Fund
   Smaller Companies Fund
 
   Ask your investment representative for a prospectus containing more complete
   information, including sales charges and expenses. Please read it carefully
   before you invest or send money. Or call us direct at 1-800-341-2911 weekdays
   from 7:00 a.m. to 7:00 p.m. Central time.
 
                                       26
<PAGE>   28
 
                VAN KAMPEN AMERICAN CAPITAL U.S. GOVERNMENT FUND
 
BOARD OF TRUSTEES
 
J. MILES BRANAGAN
 
LINDA HUTTON HEAGY
 
ROGER HILSMAN
 
R. CRAIG KENNEDY
 
DENNIS J. MCDONNELL*
 
DONALD C. MILLER - Co-Chairman
 
JACK E. NELSON
 
DON G. POWELL*
 
JEROME L. ROBINSON
 
FERNANDO SISTO - Co-Chairman
 
WAYNE W. WHALEN*
 
WILLIAM S. WOODSIDE
 
OFFICERS
 
DON G. POWELL*
  President and Chief Executive Officer
 
DENNIS J. MCDONNELL*
  Executive Vice President
 
RONALD A. NYBERG*
  Vice President and Secretary
 
EDWARD C. WOOD, III*
  Vice President and Chief Financial Officer
 
CURTIS W. MORELL*
  Vice President and Chief Accounting Officer
 
JOHN L. SULLIVAN*
  Treasurer
 
TANYA M. LODEN*
  Controller
 
WILLIAM N. BROWN*
 
PETER W. HEGEL*
 
ROBERT C. PECK, JR.*
 
ALAN T. SACHTLEBEN*
 
PAUL R. WOLKENBERG*
  Vice Presidents


INVESTMENT ADVISER
 
VAN KAMPEN AMERICAN CAPITAL
INVESTMENT ADVISORY CORP.
One Parkview Plaza
Oakbrook Terrace, Illinois 60181
 
DISTRIBUTOR
 
VAN KAMPEN AMERICAN CAPITAL
DISTRIBUTORS, INC.
One Parkview Plaza
Oakbrook Terrace, Illinois 60181
 
SHAREHOLDER SERVICING AGENT
 
ACCESS INVESTOR
SERVICES, INC.
P.O. Box 418256
Kansas City, Missouri 64141-9256
 
CUSTODIAN
 
STATE STREET BANK
AND TRUST COMPANY
225 Franklin Street
P.O. Box 1713
Boston, Massachusetts 02105
 
LEGAL COUNSEL
 
SKADDEN, ARPS, SLATE,
MEAGHER & FLOM
333 West Wacker Drive
Chicago, Illinois 60606
 
INDEPENDENT ACCOUNTANTS
 
KPMG PEAT MARWICK LLP
Peat Marwick Plaza
303 East Wacker Drive
 
Chicago, Illinois 60601
 
* "Interested" persons of the Fund, as defined in the
  Investment Company Act of 1940.
(C) Van Kampen American Capital Distributors, Inc., 1996
    All rights reserved.
 
(SM) denotes a service mark of
     Van Kampen American Capital Distributors, Inc.
 
This report is submitted for the general information of the shareholders of the
Fund. It is not authorized for distribution to prospective investors unless it
has been preceded or is accompanied by an effective prospectus of the Fund which
contains additional information on how to purchase shares, the sales charge, and
other pertinent data.
 
                                       27
<PAGE>   29
 
                VAN KAMPEN AMERICAN CAPITAL U.S. GOVERNMENT FUND
 
THIS PAGE INTENTIONALLY LEFT BLANK
 
                                       28


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