7 U.S.C. § 7469 — Investigations and power to subpoena

(a) In general. The Secretary can investigate as needed (1) to carry out duties under this law, or (2) to find out whether someone has violated this law or any related order, rule, or regulation. (b) Power to subpoena. (1) For investigations, the Secretary can put people under oath and subpoena records relevant to the inquiry from anywhere in the United States. (2) For administrative hearings under sections 7467 or 7468, the officer presiding can put people under oath, subpoena witnesses, make them attend, take evidence, and require relevant records from anywhere in the country. (c) Aid of courts. If someone refuses to comply with or defies a subpoena, the Secretary can ask a federal court — where the investigation is happening or where the person lives or does business — to order them to comply. (d) Contempt. If someone disobeys that court order, the court can punish them for contempt of court. (e) Process. Legal papers in these cases can be served in the district where the person lives or does business, or wherever they can be found. (f) Hearing site. Hearings held under sections 7467 or 7468 take place in the district where the affected person lives or has their main place of business.