Zeldin says EPA will launch formal rulemaking effort to overturn key climate finding

By Annie Snider | 04/21/2025 04:03 PM EDT

President Donald Trump’s EPA chief talked climate regulations, scientific research and PFAS during an hourlong press conference.

EPA Administrator Lee Zeldin attends a meeting.

EPA Administrator Lee Zeldin attends an Oval Office meeting on March 13 with President Donald Trump and NATO Secretary General Mark Rutte. Andrew Harnik/Getty Images

The Trump administration’s effort to overturn the federal government’s core scientific finding about the dangers of greenhouse gases will be a formal agency action and will include public comment, EPA Administrator Lee Zeldin said Monday.

Zeldin announced last month that the agency will “reconsider” the 2009 conclusion that carbon dioxide pollution endangers human health and welfare, known as the endangerment finding. Undoing it would gut the justification for many climate pollution regulations.

“There will be a rulemaking process — that’s what I anticipate at this point — with public comment,” Zeldin told reporters Monday.

Advertisement

He said he didn’t have a specific timeline for that process, nor for the dozens of other deregulatory efforts he has announced, but that “we’ll make sure that the actions that we take on everything are as durable as possible.”

GET FULL ACCESS