The California Air Resources Board is continuing to enforce “stringent emission standards” for trucks despite President Donald Trump’s congressional resolutions in June invalidating the Environmental Protection Agency’s preemption waivers for the state's two standards on emissions for trucks.

California regulators on Tuesday vowed to strengthen their commitment to slashing harmful vehicular emissions as the Trump administration ramps up efforts to overturn the state’s pollution policies. “Clean air efforts are under siege,

The State of California is making a clear-cut response to the Trump administration’s push to strip it of its authority to create distinct emissions policies. On August 19, regulators in the Golden State announced a sweeping set of priorities to keep the state’s clean air goals on track—even as the