Trump's EPA proposes rolling back Obama-era regulations on greenhouse gas emissions, aiming to rescind the 2009 endangerment finding.

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.