INSURED MUNICIPALS INCOME TRUST & IN QU TAX EX TR MUL SE 316, 485BPOS, EX-99.1.1, 2000-08-25

INSURED MUNICIPALS INCOME TRUST & IN QU TAX EX TR MUL SE 316
485BPOS, EX-99.1.1, 2000-08-25

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               Consent of Independent Certified Public Accountants

     We have issued our report dated June 16, 2000 accompanying the financial
statements of Van Kampen Focus Portfolio, Municipal Series 316 as of April 30,
2000, and for the period then ended, contained in this Post-Effective Amendment
No. 1 to Form S-6.

   We consent to the use of the aforementioned report in the Post-Effective
Amendment and to the use of our name as it appears under the caption "Auditors".

                                        Grant Thornton LLP

Chicago, Illinois
August 25, 2000