Trump Administration Sues California Over Vehicle Emission Rules

Lawsuit targets state's nation-leading standards aimed at curbing pollution from cars

Mar. 13, 2026 at 3:18am

Got story updates? Submit your updates here. ›

The Trump administration has filed a lawsuit against California over the state's nation-leading vehicle emission standards, ramping up a battle over efforts to curb tailpipe pollution and spur electric vehicle adoption. The lawsuit comes as gas prices climb nationwide and some drivers consider switching to electric cars.

Why it matters

California has long been able to set stricter emissions standards than the federal government, but the Trump administration previously revoked that authority. The lawsuit is the latest move in an ongoing conflict between the federal government and California over environmental regulations.

The details

The lawsuit claims that California doesn't have the authority to enforce even its less stringent emissions standards, which the state says will remain in effect even if its more ambitious rules are blocked. The Trump administration argues that California's "oppressive, expensive electric vehicle mandates" violate federal law and drive up costs for consumers.

  • On March 12, 2026, the Trump administration filed the lawsuit against California.
  • Last summer, the Trump administration blocked California's first-in-the-nation ban on the sale of new gas-powered cars by 2035.

The players

Donald Trump

The former President of the United States who has long fought against California's efforts to curb tailpipe emissions and spur electric vehicle adoption.

Gavin Newsom

The Democratic Governor of California whose office blasted the lawsuit, noting it comes as gas prices climb amid the Iran war and as some drivers consider going electric.

Pam Bondi

The Attorney General who said in a statement that "Oppressive, expensive electric vehicle mandates drive up costs for American consumers and violate federal law."

Dan Farber

The faculty director of the Center for Law, Energy, and the Environment at the University of California, Berkeley's law school, who said it's "ironic" that the lawsuit is happening when people are most worried about gas prices.

Got photos? Submit your photos here. ›

What they’re saying

“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.”

— Anthony Martinez, Spokesperson for Governor Gavin Newsom (ksgf.com)

“Oppressive, expensive electric vehicle mandates drive up costs for American consumers and violate federal law.”

— Pam Bondi, Attorney General (ksgf.com)

“It's ironic that they're doing this just at the time when people are most worried about gas prices.”

— Dan Farber, Faculty director of the Center for Law, Energy, and the Environment at UC Berkeley Law School (ksgf.com)

What’s next

The lawsuit will likely be a prolonged legal battle, with the outcome determining the future of California's ability to set its own vehicle emission standards.

The takeaway

This lawsuit is the latest chapter in the ongoing conflict between the federal government and California over environmental regulations. The outcome could have significant implications for the state's efforts to curb pollution and promote electric vehicle adoption, as well as the broader national debate over the balance of power between states and the federal government on these issues.