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.

Lee Zeldin, the head of the Environmental Protection Agency, unveiled the move at a car dealership in the US state of Indiana on Tuesday, hailing it as "the largest deregulatory action in the history of the United States" and the "death of the Green New Scam.