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Auto emission standards

California Dump Truck Owners Ass'n v. Nichols

The Ninth Circuit upheld the dismissal of a trucking association's federal preemption challenge to a California environmental regulation on diesel trucks. The regulation requires heavy-duty diesel trucks, whose emissions contribute...

Central Valley Chrysler-Jeep, Inc. v. Witherspoon

A district court stayed an automobile industry lawsuit over California's greenhouse gas rules for cars pending the outcome of the U.S. Supreme Court's decision in Massachusetts v. U.S. Environmental Protection Agency (EPA), 415...