In legal maneuvers and executive actions, in public speeches and closed-door meetings with industry groups, he has moved to shrink the agency's reach, alter its focus, and pause or reverse numerous environmental rules. The effect has been to steer the EPA in the direction sought by those being regulated. Along the way, Pruitt has begun to dismantle former president Barack Obama's environmental legacy, halting the agency's efforts to combat climate change and to shift the nation away from its reliance on fossil fuels.