California Gov. Jerry Brown (D) this week is ripping President TrumpDonald TrumpFreedom Caucus member condemns GOP group pushing 'Anglo-Saxon political traditions' MyPillow CEO Mike Lindell's new free speech site to ban certain curse words Secret Facebook groups of special operations officers include racist comments, QAnon posts: report MORE over the White House’s environment policies, particularly the decision to roll back regulations on the release of methane gasses.

“When Trump says, in effect, ‘We like more methane going into the air,’ that is highly destructive, very highly destructive,” Brown said Thursday at the Global Climate Action Summit in San Francisco.

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“So I think he’ll be remembered on the past he is now, I don’t know, liar, criminal, fool, pick your choice,” he added. 

Brown slammed Trump’s rollbacks of environmental protections as a “major assault on the wellbeing of the people of California and America and the world. It borders on not only insanity but criminality.”

The governor has cast himself as a champion of environmental issues, vowing that California will get all of its energy from clean sources by 2045 and recently announcing the launch of California’s own satellite to monitor climate change sources in response to Trump’s threatening funding for NASA's program.

Trump's rollbacks at the Environmental Protection Agency are part of his deregulation agenda.