(a)
United States participation
The Secretary of the Interior shall direct and coordinate United States participation in the Convention Concerning the Protection of the World Cultural and Natural Heritage, approved by the Senate on October 26, 1973, in cooperation with the Secretary of State, the Smithsonian Institution, and the Advisory Council on Historic Preservation. Whenever possible, expenditures incurred in carrying out activities in cooperation with other nations and international organizations shall be paid for in such excess currency of the country or area where the expense is incurred as may be available to the United States.
(b)
Nomination of property to World Heritage Committee
The Secretary of the Interior shall periodically nominate properties he determines are of international significance to the World Heritage Committee on behalf of the United States. No property may be so nominated unless it has previously been determined to be of national significance. Each such nomination shall include evidence of such legal protections as may be necessary to ensure preservation of the property and its environment (including restrictive covenants, easements, or other forms of protection). Before making any such nomination, the Secretary shall notify the Committee on Natural Resources of the United States House of Representatives and the Committee on Energy and Natural Resources of the United States Senate.
(c)
Nomination of non-Federal property to World Heritage Committee
No non-Federal property may be nominated by the Secretary of the Interior to the World Heritage Committee for inclusion on the World Heritage List unless the owner of the property concurs in writing to such nomination.