As the possibility lingers of climate change-denier Donald Trump making the United States a “rogue country” by following through on his promise to ditch the Paris climate accord, some say that cities and states in the U.S. can—and must—take the reins for climate action.

Trump could very well make good on that promise, argues climate activist and author Bill McKibben, as “he’s surrounded by climate-change deniers and fossil-fuel insiders who will try to ensure that he keeps his word.”

Amidst a “climate emergency,” a re-committment to the goals of the Paris deal took place last week in Marrakesh, Morocco, with global leaders noting the “urgent priority” of climate action.

“Indeed, this year, we have seen extraordinary momentum on climate change worldwide,” the proclamation signed by nearly 200 countries states. “This momentum is irreversible—it is being driven not only by governments, but by science, business, and global action of all types at all levels.”

Yet, as StateImpact Pennsylvania writes, the real estate mogul’s election “turned the rock-star U.S. climate delegation into lame ducks.” It continues:

London-based activist Adam McGibbon writes that the U.S. climate movement should fan the flames for such action, noting that