CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

     We have issued our report dated April 22, 2008, accompanying the financial
statements of Select Growth Trust, January 2006 Series (included in Van Kampen
Unit Trusts, Series 548) as of December 31, 2007, and for each of the two years
in the period ended and the financial highlights for the period from January 17,
2006 (Initial Date of Deposit) through December 31, 2006 and for the year ended
December 31, 2007, contained in this Post-Effective Amendment No. 2 to Form S-6
(File No. 333-129471) and Prospectus.

     We hereby consent to the use of the aforementioned report in this
Post-Effective Amendment and Prospectus and to the use of our name as it appears
under the caption "Other Matters-Independent Registered Public Accounting Firm".

                               GRANT THORNTON LLP

New York, New York
April 22, 2008