California approves vehicle pollution rules in rebuke to Trump

Reuters: RIVERSIDE, Calif., March 24 (Reuters) - 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.

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