31 U.S.C. § 5303 : US Code - Section 5303: Reserved coins and currencies of foreign countries

Search 31 U.S.C. § 5303 : US Code - Section 5303: Reserved coins and currencies of foreign countries

An agency may use coins and currencies of a foreign country the
United States Government holds that are or may be reserved for a
specific program or activity of an agency. The agency shall
reimburse the Treasury from appropriations and shall replace the
coins and currencies when they are needed for the program or
activity for which they were reserved originally.