Politico: As administrator of the EPA from 2001-03, I served in the administration of President George W. Bush. I may sometimes disagree with his successor on the best way to address climate change as a matter of policy, but I absolutely agree that the EPA has broad authority to issue regulations addressing climate change, including those being challenged by industry groups and their allies in Utility Air Regulatory Group v. Environmental Protection Agency, otherwise known as "the greenhouse gas cases,' or...