If a person disobeys a subpoena, the Secretary, the Administrator of the Transportation Security Administration, the Administrator of the Federal Aviation Administration, or a party to a proceeding before the Secretary, Administrator of the Transportation Security Administration, or Administrator of the Federal Aviation Administration may petition a court of the United States to enforce the subpoena. A judicial proceeding to enforce a subpoena under this section may be brought in the jurisdiction in which the proceeding or investigation is conducted. The court may punish a failure to obey an order of the court to comply with the subpoena as a contempt of court.

A witness summoned before the Secretary, Administrator of the Transportation Security Administration, or Administrator of the Federal Aviation Administration or whose deposition is taken under this section and the individual taking the deposition are each entitled to the same fee and mileage that the witness and individual would have been paid for those services in a court of the United States. Under regulations of the Secretary, Administrator of the Transportation Security Administration, or Administrator of the Federal Aviation Administration, the Secretary, Administrator of the Transportation Security Administration, or Administrator of the Federal Aviation Administration shall pay the necessary expenses incident to executing, in another country, a commission or letter rogatory issued at the initiative of the Secretary, Administrator of the Transportation Security Administration, or Administrator of the Federal Aviation Administration.

When designated by the Secretary, Administrator of the Transportation Security Administration, or Administrator of the Federal Aviation Administration, an employee appointed under section 3105 of title 5 may conduct a hearing, subpoena witnesses, administer oaths, examine witnesses, and receive evidence at a place in the United States the Secretary, Administrator of the Transportation Security Administration, or Administrator of the Federal Aviation Administration designates. On request of a party, the Secretary, Administrator of the Transportation Security Administration, or Administrator of the Federal Aviation Administration shall hear or receive argument.