Supporters of a November ballot measure to repeal a California gas tax increase proposed on Tuesday, September 25, 2018, an initiative for 2020, saying it would provide money for road repairs and eliminate the state's beleaguered $77 billion high-speed rail project.

"America is fully in the Paris agreement. There's only one man that dropped out," Arnold Schwarzenegger said of Donald Trump on Tuesday. "America did not drop out."

California lawmakers have moved closer to a high-stakes decision that will decide the fate of a climate initiative that Gov. Jerry Brown holds up as a model to be replicated around the world.

Gov. Jerry Brown warned on Thursday of a California ravaged by forest fires, disease and mass migration if lawmakers fail to renew the state's signature program to fight climate change.

A plan to extend California's signature climate initiative for another decade is scheduled to go before legislative committees on July 13, 2017, despite opposition from some environmental advocates.

Maximum penalties for violating pollution laws will jump from $1,000 to $5,000, and they’ll go up each year to match inflation.