28 U.S.C. § 2323 : US Code - Section 2323: Duties of Attorney General; intervenors

Search 28 U.S.C. § 2323 : US Code - Section 2323: Duties of Attorney General; intervenors

The Attorney General shall represent the Government in the
actions specified in section 2321 of this title and in enforcement
actions and actions to collect civil penalties under subtitle IV of
title 49.
The Surface Transportation Board and any party or parties in
interest to the proceeding before the Board, in which an order or
requirement is made, may appear as parties of their own motion and
as of right, and be represented by their counsel, in any action
involving the validity of such order or requirement or any part
thereof, and the interest of such party.
Communities, associations, corporations, firms, and individuals
interested in the controversy or question before the Board, or in
any action commenced under the aforesaid sections may intervene in
said action at any time after commencement thereof.
The Attorney General shall not dispose of or discontinue said
action or proceeding over the objection of such party or
intervenor, who may prosecute, defend, or continue said action or
proceeding unaffected by the action or nonaction of the Attorney
General therein.