The U.S. Environmental Protection Agency plans to repeal all greenhouse gas emission standards for light-duty, medium-duty, and heavy-duty vehicles and engines in the coming days after it removes the scientific finding that justified those rules,

This move effectively strips the EPA of its legal basis to regulate CO₂ and other vehicle emissions under the Clean Air Act. Reversing the endangerment finding jeopardizes the

The Trump administration wants to reverse a 2009 EPA finding that greenhouse gases endanger people. The finding is the basis for much of the United States' climate change regulations.