Tonight’s decision could upend California’s phaseout of gas-powered cars and its battle against air pollution. Some experts ...

Senate Republicans could vote this week to take away California's ability to impose tough limits on car emissions — a move ...

The Senate parliamentarian advised lawmakers that they couldn't use the Congressional Review Act to revoke California's right ...

California’s authority to set environmental rules that are tougher than national standards had never been challenged by ...

Senate Republicans have voted to establish a new precedent that will allow them to roll back clean air standards in ...

Senate Republicans oppose California's car emissions rules, questioning the EPA's authority and potential nationwide effects.

The U.S. Senate is moving forward with an effort to block California's nation-leading standards for vehicle emissions ...