((a)) ** Implementation of conservation program; authorization of Secretary and Secretary of Agriculture** The Secretary, and the Secretary of Agriculture with respect to the National Forest System, shall establish and implement a program to conserve fish, wildlife, and plants, including those which are listed as endangered species or threatened species pursuant to . To carry out such a program, the appropriate Secretary—

((1)) shall utilize the land acquisition and other authority under the Fish and Wildlife Act of 1956, as amended [ et seq.], the Fish and Wildlife Coordination Act, as amended [ et seq.], and the Migratory Bird Conservation Act [ et seq.], as appropriate; and

((2)) is authorized to acquire by purchase, donation, or otherwise, lands, waters, or interest therein, and such authority shall be in addition to any other land acquisition authority vested in him.

((b)) ** Availability of funds for acquisition of lands, waters, etc.** Funds made available pursuant to chapter 2003 of title 54 may be used for the purpose of acquiring lands, waters, or interests therein under subsection (a) of this section.