The undoing of the CPP marks the start of a long regulatory battle

Environmental Protection Agency Administrator Scott Pruitt speaks at a news conference. Photo: Teresa Crawford / AP

The Environmental Protection Agency's proposal yesterday to undo the Obama-era Clean Power Plan (CPP) marks the start of a long, contentious regulatory fight, which will be followed by a long, contentious legal fight.

Pruitt's strategy: EPA boss Scott Pruitt, in proposing to repeal a rule he said overstepped the bounds of the Clean Air Act, held out the prospect of replacing it with something much more modest — at some point.