California Approves Vehicle Pollution Rules in Rebuke to Trump

California on Friday challenged the Trump administration's approach to car pollution, approving standards that the White House said still need review and setting up a potential face-off between federal and state regulators.

California Governor Jerry Brown and other state officials have vowed to lead the defense of environmental and other traditionally liberal causes against President Donald Trump.

About a dozen states follow California's car regulations in full or part, and the potential face-off between federal and state regulators could be expensive for automakers and a headache for consumers.

On Friday, the California Air Resources Board in a unanimous vote finalized 2022-2025 vehicle pollution rules for the state, set a mandate for zero-emission sales over the same time period, and ordered its staff to start work on targets for after 2025.

Last week the U.S. Environmental Protection Agency said it would reconsider the 2022-2025 tailpipe emissions targets after auto makers requested the review.

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