Requires the Secretary to object to the inclusion of any property in the United States on the list of World Heritage in Danger unless the Secretary: (1) has reported to Congress on the necessity for such inclusion, the associated natural resources, and the impact of inclusion on existing and future uses of such property; and (2) is specifically authorized to assent to the inclusion by a joint resolution of Congress.
Prohibits any Federal official from nominating any lands in the United States for designation as a Biosphere Reserve. Nullifies any such designation before enactment of this Act unless the Biosphere Reserve: (1) is specifically authorized by a law enacted after enactment of this Act and before December 31, 2003; (2) consists solely of federally owned lands; and (3) is subject to a management plan that ensures that the use of intermixed or adjacent non-Federal property is not limited or restricted as a result of that designation.
Prohibits any Federal official from nominating, classifying, or designating any Federal land for a special or restricted use under any international conservation agreement unless specifically authorized by law. Provides that any such nomination, classification, or designation of private or State or local lands shall have no force or effect without the owner's consent or specific authorization by State or local law, respectively.