U.S. Code / Title 31 — Money and Finance / Subtitle Ii—the Budget Process / Chapter 13—AppropriationsTitle 31SubchapterSubchapter Ii—Trust Funds and RefundsContents§ 1321. Trust funds§ 1322. Payments of unclaimed trust fund amounts and refund of amounts erroneously deposited§ 1323. Trust funds for certain fees, donations, quasi-public amounts, and unearned amounts§ 1324. Refund of internal revenue collections