Pursuant to the provisions of an Act of Congress entitled "An Act to authorize the Secretary of the Army to adjust the legislative jurisdiction exercised by the United States over land within the Fort Sheridan Military Reservation, Illinois", approved August 25, 1961, and known as Public Law 87-160 of the Eighty-seventh Congress, the State of Illinois hereby accepts retrocession of legislative jurisdiction over such land as may be relinquished from Federal jurisdiction by the Secretary of the Army, pursuant to the provisions of said Public Law 87-160 of the Eighty-seventh Congress.
5 ILCS 540/1