When a domestic financial institution is involved in a transaction for the payment, receipt, or transfer of United States coins or currency (or other monetary instruments the Secretary of the Treasury prescribes), in an amount, denomination, or amount and denomination, or under circumstances the Secretary prescribes by regulation, the institution and any other participant in the transaction the Secretary may prescribe shall file a report on the transaction at the time and in the way the Secretary prescribes. A participant acting for another person shall make the report as the agent or bailee of the person and identify the person for whom the transaction is being made.

The Secretary may designate a domestic financial institution as an agent of the United States Government to receive a report under this section. However, the Secretary may designate a domestic financial institution that is not insured, chartered, examined, or registered as a domestic financial institution only if the institution consents. The Secretary may suspend or revoke a designation for a violation of this subchapter or a regulation under this subchapter (except a violation of section 5315 of this title or a regulation prescribed under section 5315), section 411 ^[1] of the National Housing Act (12 U.S.C. 1730d), or section 21 of the Federal Deposit Insurance Act (12 U.S.C. 1829b).