22 CFR § 34.24
Refunds
November 19, 2020
(a) STATE will refund promptly to the appropriate individual amounts offset under this regulation when:
(1) A debt is waived or otherwise found not owing the United States (unless expressly prohibited by statute or regulation); or
(2) STATE is directed by an administrative or judicial order to make a refund.
(b) Refunds do not bear interest unless required or permitted by law or contract.