18 USC 986 - Subpoenas for bank records

(a) At any time after the commencement of any action for forfeiture in rem brought by the United States under section 1956, 1957, or 1960 of this title, section 5322 or 5324 of title 31, United States Code, or the Controlled Substances Act, any party may request the Clerk of the Court in the district in which the proceeding is pending to issue a subpoena duces tecum to any financial institution, as defined in section 5312 (a) of title 31, United States Code, to produce books, records and any other documents at any place designated by the requesting party. All parties to the proceeding shall be notified of the issuance of any such subpoena. The procedures and limitations set forth in section 9851 of this title shall apply to subpoenas issued under this section.
(b) Service of a subpoena issued pursuant to this section shall be by certified mail. Records produced in response to such a subpoena may be produced in person or by mail, common carrier, or such other method as may be agreed upon by the party requesting the subpoena and the custodian of records. The party requesting the subpoena may require the custodian of records to submit an affidavit certifying the authenticity and completeness of the records and explaining the omission of any record called for in the subpoena.
(c) Nothing in this section shall preclude any party from pursuing any form of discovery pursuant to the Federal Rules of Civil Procedure.
(d) Access to Records in Bank Secrecy Jurisdictions.— 

(1) In general.— 
In any civil forfeiture case, or in any ancillary proceeding in any criminal forfeiture case governed by section 413(n) of the Controlled Substances Act (21 U.S.C. 853 (n)), in which
(A) financial records located in a foreign country may be material
(i) to any claim or to the ability of the Government to respond to such claim; or
(ii) in a civil forfeiture case, to the ability of the Government to establish the forfeitability of the property; and
(B) it is within the capacity of the claimant to waive the claimants rights under applicable financial secrecy laws, or to obtain the records so that such records can be made available notwithstanding such secrecy laws,

the refusal of the claimant to provide the records in response to a discovery request or to take the action necessary otherwise to make the records available shall be grounds for judicial sanctions, up to and including dismissal of the claim with prejudice.

(2) Privilege.— 
This subsection shall not affect the right of the claimant to refuse production on the basis of any privilege guaranteed by the Constitution of the United States or any other provision of Federal law.
[1] See References in Text note below.