with the Wilderness Act ( 16 U.S.C. 1131 et seq.), except that any reference in that Act to the effective date of the Act shall be considered to be a reference to the date of enactment of this Act. (b) Incorporation of acquired land and interests Any land within the boundary of a wilderness area designated by section 301 that is acquired by the United States shall— (1) become part of the wilderness area in which the land is located