Trump EPA revokes endangerment finding; 24 states and cities file lawsuit to overturn climate regulation rollback

The Trump administration's Environmental Protection Agency revoked the 2009 endangerment finding, the scientific determination established under the Clean Air Act that greenhouse gas emissions threaten public health and welfare. This finding, based on comprehensive scientific assessment by the National Academy of Sciences and multiple federal agencies, underpins virtually all U.S. climate regulations, including vehicle emissions standards for transportation—the largest source of U.S. greenhouse gas pollution. The revocation contradicts the scientific consensus of 97% of climate scientists and removes federal authority to regulate carbon emissions. In response, a coalition of 24 states led by California, New York, Massachusetts, and Connecticut, along with 15 cities and counties, filed a lawsuit in the U.S. Court of Appeals for the District of Columbia Circuit challenging the decision as arbitrary, capricious, and contrary to established science. Massachusetts Attorney General Andrea...

"Climate change is real, and it's already affecting our residents and our economy." — Massachusetts Attorney General Andrea Joy Campbell's statement announcing the 24-state lawsuit challenging the EPA's revocation of the endangerment finding