Republican AGs Appeal for an End to California’s Advanced Clean Truck Rule

  • A group of 18 Republican AGs filed a brief with the U.S. Court of Appeals for the D.C. Circuit in a consolidation of five cases that challenge the EPA’s decision to grant California a Clean Air Act (CAA) waiver that allowed the state to enact vehicle emissions standards more stringent than those imposed by the federal government.
  • In the brief, the AGs argue that the waiver for California’s Advanced Clean Trucks rule is unconstitutional because it violates the equal-sovereignty doctrine—which prohibits states from being singled out by the federal government for special treatment—and the AGs argue that the waiver contradicts the CAA’s lead time requirement for heavy-duty vehicles and engines.
  • The AGs ask the Court of Appeals to invalidate the EPA waiver issued to California.
  • We previously covered the AGs’ filing of a petition for review in this case.