California Gov. Gavin Newsom has begun a process that could strengthen California Air Resources Board regulations against another Trump mandate.

Newsom ordered a special legislative session last week preparing state politicians for another conflict with President-elect Donald Trump. On Dec. 2, the state legislature will convene for a special legislative session.

For trucking, that means California could tighten its emissions regulations, including CARB Emissions Rules-before Trump administration begins easing emissions standards. According to The Recordera Trump administration could clash with California on several other issues, including immigration, abortion and labor laws.

The special session will strengthen state resources to “protect civil rights, reproductive freedom, climate action, and immigrant families.” the governor’s office said. Newsom ordered the Legislature to use the session to provide additional funding to the agency and amend existing law before the conflict.

According to Newsom’s order, the session could help the state “immediately file affirmative litigation challenging actions taken by the incoming Trump administration,” “defend against litigation or enforcement actions” brought by the administration and to “take administrative measures” to mitigate the impacts of the Trump administration’s actions.

See also: 3 Ways a Republican Victory Could Change the Trucking Industry

Trump vs. CARB

Trump and CARB have a tense history – and it seems likely to resume in 2025.

California has special authority to set its own emissions standards under waivers granted by the Clean Air Act. Other states will then be able to adopt California’s standards. The first Trump administration attempted to eliminate California’s autonomy on emissions.

The first Trump administration revoked CARB’s Clean Air Act waivertemporarily nullifying the state’s power to set emissions standards. The Biden administration in 2022, the CARB waiver was reinstated.

This year, Trump’s campaign office pledged to revoke the CARB waiver again.

“On day one of the Trump administration, not only will Crooked Joe’s electric vehicle mandate end, but any Biden waiver allowing a ban on gas-powered cars will be immediately revoked” the Trump campaign told POLITICO.