The U.S. Environmental Protection Agency will rescind the long-standing finding that greenhouse gas emissions endanger human health, as well as tailpipe emission standards for vehicles, removing the legal foundation of greenhouse gas regulations across industries,

If successful, the repeal could strip away the federal government’s most powerful way to control the country’s planet-warming pollution and fight climate change.

The Trump administration’s U.S. Environmental Protection Agency proposed on Tuesday revoking a science-based determination that pollution fueling climate change harms public health. The so-called endangerment finding has since 2009 underpinned federal regulations for vehicles,