Donald Trump is coming for the “ holy grail ” of climate regulations. As multiple media outlets reported this week, the administration plans to roll back the “ endangerment finding ,” an Obama-era Environmental Protection Agency decision at the center of the government’s ability to address climate change.

The U.S. Environmental Protection Agency plans to repeal all greenhouse gas emission standards for light-duty, medium-duty, and heavy-duty vehicles and engines in the coming days after it removes the scientific finding that justified those rules,