Twenty-two states are suing the Environmental Protection Agency over the administration’s Affordable Clean Energy rule.

The Affordable Clean Energy rule will establish a framework for emission reductions for coal plants. States will develop specific plans.

The U.S. Environmental Protection Agency plans to roll back the Obama administration’s 2015 Clean Power Plan, meant to cut greenhouse-gas emissions 32% from 2005 levels by 2030. 

The fossil-fuel industry can’t be restored by rolling back the Clean Power Plan or other clean-energy programs. That train has left the station. Trump would do better to catch it and try to direct where it goes.