Watch out, Big Oil. Jay Inslee’s back at it again with a greenhouse gas fee.

Adding to his growing stack of policies aimed at averting the climate crisis, Washington Governor Jay Inslee, one of the 23 Democrats running for president, announced Monday the fourth part of his Climate Mission. No other candidate has released as many proposals centered on warming — but then again, no other candidate is trying to win the right to face Donald Trump on a platform solely centered on it.