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,

The EPA is advancing a proposal to reverse its 2009 “endangerment finding,” a legal determination that greenhouse gas emissions pose a threat

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.