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

The Environmental Protection Agency’s endangerment finding is one of the most consequential environmental regulations in recent U.S. history. President Donald Trump’s administration this week proposed revoking the finding,

EPA chief Lee Zeldin proposes a repeal of the Endangerment Finding on climate change. State Sen. Ed Markey is fighting back.