Receipts for any reimbursable charges or expenses which have been paid for out of any appropriation for collecting the revenue from customs shall be deposited as a refund to such appropriation instead of being covered into the Treasury as miscellaneous receipts, as provided by section 527 of this title.
(June 17, 1930, ch. 497, title IV, § 524, 46 Stat. 741; June 25, 1938, ch. 679, § 19(b), 52 Stat. 1087.)