The Senate is expected to vote Thursday to revoke three vehicle emissions waivers in California, a controversial move that the chamber's parliamentarian says Republican lawmakers may not have the right to make.

Senate Republicans have voted to establish a new precedent that will allow them to roll back clean air standards in California, including a rule phasing out the sale of new gas-powered cars by 2035

Republicans used a procedural tactic to counter Democratic accusations they were gutting the filibuster and lay the groundwork to block a California plan to phase out gas-powered vehicles.