49 U.S. Code § 14702 - Enforcement by the regulatory authority
(a) In General.— The Secretary or the Board, as applicable, may bring a civil action—
(1) to enforce section 14103 of this title; or
(2) to enforce this part, or a regulation or order of the Secretary or Board, as applicable, when violated by a carrier or broker providing transportation or service subject to jurisdiction under subchapter I or III of chapter 135 of this title or by a foreign motor carrier or foreign motor private carrier providing transportation registered under section 13902 of this title.
(b) Venue.— In a civil action under subsection (a)(2) of this section—
(1) trial is in the judicial district in which the carrier, foreign motor carrier, foreign motor private carrier, or broker operates;
(2) process may be served without regard to the territorial limits of the district or of the State in which the action is instituted; and