By way of the bully pulpit, and as the leader of coordinated efforts by Republican officeholders to sue U.S. EPA, President-elect Donald Trump's pick for that agency, Oklahoma Attorney General Scott Pruitt, has advocated dismantling rules requiring cuts to carbon emissions from the electric power and oil and gas sectors and limiting U.S. enforcement powers. For most of his elected career, Pruitt has been a champion of deregulation. "I've fought for 6 years against the ACA, WOTUS, Immigration & the Clean Power Plan. Which should #Trump tackle first?" Pruitt said on Twitter last month.