The US Senate voted to revoke California's authority to set its own tailpipe pollution rules, which are more stringent than national standards.
Opponents argue that this move is illegal and goes against Senate rules and norms.
Senate Republicans proceeded with the vote to revoke waivers that allow California to advance its climate goals and air quality improvements.
The resolutions passed aim to hinder California's ambitious climate plans by rescinding approvals for zero-emission vehicle requirements, drawing criticism from environmental advocates and trade groups.