California has been setting its own emissions standards for more than 50 years. In a political tug-of-war that’s been playing out for a long time, the battle between Donald Trump and California over vehicle emissions has landed back in the spotlight.

Trump signed three measures revoking California's waivers for rules that clean up cars and trucks. California and 9 other states immediately sued.

Technology Technology   The Big Story  California claps back at Trump’s overturning of EV mandate California officials on Thursday filed their 26th lawsuit against the Trump

Air quality regulators in Southern California have rejected rules that would have curbed harmful emissions from gas-powered furnaces and water heaters

Trump signed measures Thursday revoking waivers for the state’s mandates that clean up car and truck exhaust and ramp up sales of electric vehicles.