36 U.S.C. § 108
Constitution Week
The President is requested to issue each year a proclamation—
(1)
designating September 17 through September 23 as Constitution Week; and
(2)
inviting the people of the United States to observe Constitution Week, in schools, churches, and other suitable places, with appropriate ceremonies and activities.
( Pub. L. 105–225 , Aug. 12, 1998 , 112 Stat. 1256 .)