JOHN YANG:

It's been on hold while coal states and the energy industry challenged it in court as an unconstitutional power grab.

Today's order mandates a review of the Clean Power Plan, lifts a moratorium on new coal leases on federal lands, starts a review of reducing methane emissions in oil and natural gas production, and launches an assessment of rules governing hydraulic fracturing, also called fracking, by oil and gas drillers.

During the campaign, Mr. Trump slammed the Obama administration for waging a war on coal and vowed to bring back mining jobs.