The head of a Colorado trucking industry group is voicing concerns about the Attorney General's decision to sue the ...

President Donald Trump signed congressional resolutions ending California's electric vehicle mandates and diesel engine ...

President Donald Trump is expected to sign a measure Thursday that blocks California’s first-in-the-nation rule banning the ...

Senate Majority Leader John Thune and several other top GOP senators Tuesday pledged to vote to nix California's Clean Air Act emissions waiver.

Trump also revoked two other Biden-era waivers on Thursday. Those would have allowed California to require vehicle makers to ...

Immediately after President Donald Trump signed a congressional bill overturning California’s 2035 gasoline-powered car ban, ...

Trump's signature revokes the Golden State's unique permission to exceed federal vehicle pollution standards, which it's used for decades to set nation-leading rules. A dozen other Democrat-led states ...

The move sets up another battle with Gov. Gavin Newsom, who has sparred with Trump in recent days over the president’s ...

Drive enough electric vehicles from enough different manufacturers and something becomes clear: the Korean automakers know ...

Trump had campaigned against three programs that allowed the states to require manufacturers to sell an increasing amount of ...

Kentucky, still vastly reliant on fossil fuel-fired power plants, has much at stake in the EPA's power plant rulemaking.

The EPA granted California permission to implement an electric vehicle mandate that several other states adopted, despite the ...