Quick search by citation:

22 U.S. Code § 1478 - Reimbursement of program expenses from sources other than appropriations; disposition of receipts

The Secretary shall, when he finds it in the public interest, request and accept reimbursement from any cooperating governmental or private source in a foreign country, or from State or local governmental institutions or private sources in the United States, for all or part of the expenses of any portion of the program undertaken hereunder. The amounts so received shall be covered into the Treasury as miscellaneous receipts.

(Jan. 27, 1948, ch. 36, title IX, § 901, 62 Stat. 13.)