Congress has passed a measure to overturn California’s phased-in 2035 ban on the sale of new gas cars.

The vote impacts 11 other states and the District of Columbia, which make up 40% of the nation’s car market and adopted California emissions standards. 

The measure, which was passed by the Senate Thursday after its previous approval by the House, now heads to President Donald Trump’s desk for his signature. But the Senate parliamentarian’s objection to Congress’s authority to overturn the EPA waiver approving the ban could set the stage for a possible legal battle between the federal government and states that have adopted the California ban. 

The phased-in zero-emission vehicle requirement is set to apply to California, Massachusetts, New York, Oregon, Vermont and Washington for the ongoing model year 2026, and Colorado, Delaware, Maryland, New Jersey, New Mexico, Rhode Island and Washington, D.C. for model year 2027.