would amend the CAA to eliminate a waiver under the Act and to eliminate an authorization for states to use new motor vehicle emission and new motor vehicle engine emissions standards identical to standards adopted in California.

would amend the CAA to eliminate a waiver under the Act and to eliminate an authorization for states to use new motor vehicle emission and new motor vehicle engine emissions standards identical to standards adopted in California.

would amend the CAA to repeal the waiver authority allowing California to enforce certain standards relating to federally regulated motor vehicle emissions.