Mr. Newsom is escalating his war on the industry. The California Energy Commission is planning to impose a tax on refineries’ “gross margins”—i.e., the difference between wholesale gasoline and crude prices plus certain regulatory costs. The gross margin notably doesn’t include refiners’ operating costs, which include employee pay.

Gavin Newsom, speaking at the Vatican, used sharp language to describe the former president’s appeal to fossil fuel executives for campaign donations.

Gov. Gavin Newsom called out President Donald Trump's efforts to roll back climate change policies on a world stage during a climate summit at the Vatican.