The Secretary may, subject to subsection (c), require a State to repay any payments received by the State under section 290cc–21 of this title that the Secretary determines were not expended by the State in accordance with the agreements required to be contained in the application submitted by the State pursuant to section 290cc–29 of this title.

If a State fails to make a repayment required in paragraph (1), the Secretary may offset the amount of the repayment against the amount of any payment due to be paid to the State under section 290cc–21 of this title.