The administration of U.S. President Donald Trump has filed a lawsuit against the California Air Resources Board (CARB), escalating a long-running dispute over the state’s authority to enforce stricter vehicle emissions standards than federal regulations.
The legal action seeks to block California from implementing its own rules aimed at reducing automotive pollution, with the federal government arguing that such measures exceed the state’s authority under U.S. law.
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“Oppressive, expensive electric vehicle mandates drive up costs for American consumers and violate federal law,” said Attorney General Pam Bondi in a statement.
California has historically maintained more stringent emissions policies than national standards, contributing to higher electric vehicle adoption rates in the state. However, these policies have been a point of contention with the Trump administration, which has sought to limit state-level regulatory autonomy.
The latest lawsuit follows earlier federal actions, including efforts to block California’s planned phase-out of new internal combustion engine vehicles by 2035, as well as restrictions on emissions from passenger cars and heavy-duty trucks.
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California Governor Gavin Newsom has pushed back against the federal measures, with the state joining other jurisdictions in legal challenges while maintaining its emissions framework.
A spokesperson for Newsom criticised the timing of the lawsuit, linking it to broader economic pressures. “Gas prices are soaring nationwide because of Trump’s reckless choices, and now he’s attacking the Golden State for trying to give Californians more freedom and cheaper options,” said Anthony Martinez.
Fuel prices in California remain significantly higher than the national average. According to the American Automobile Association, gasoline prices in the state averaged $5.37 per gallon at the end of last week, compared with a U.S. average of $3.60.
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The dispute highlights ongoing tensions between federal and state authorities over environmental policy, particularly as California seeks to accelerate the transition to electric vehicles while the federal government pursues a different regulatory approach.