On Tuesday the U.S. Environmental Protection Agency released its proposal to undo its long-standing rationale and legal mandate to regulate greenhouse gases under the decades-old Clean Air Act—part of the Trump administration’s wide-ranging campaign to dismantle federal efforts to combat climate change.

President Donald Trump's administration on Tuesday proposed revoking a scientific finding that has long been the central basis for U.S. action to regulate greenhouse gas emissions and fight climate change .

The Trump administration on Tuesday proposed to repeal a 2009 landmark finding that greenhouse gases pose a threat to the public. The “endangerment finding” came after the Supreme Court ruled in 2007 that the Environmental Protection Agency (EPA) can regulate greenhouse gases (GHG) if it determines that they harm Americans’ well-being.