7 U.S.C. § 1655 — Authorization of appropriations; use

(a) There are hereby authorized to be appropriated to the Secretary of Agriculture and to the Secretary of the Interior such sums as the Congress may from time to time determine to be necessary to carry out the purposes of this chapter.

(b) Any sums so appropriated shall be available for expenditure for the employment of persons and means in the District of Columbia and elsewhere, for the purchase, hire, maintenance, operation, and exchange of aircraft and passenger-carrying vehicles, and for such other expenses as may be necessary to carry out the purposes of this chapter.

(c) Such sums shall not be used to pay the cost or value of any property injured or destroyed in carrying out the purposes of this chapter.