The Supreme Court ruled that the EPA as a regulatory agency cannot make laws. In fact:
However, by a 6-3 vote the Supreme Court said today the Clean Air Act does not give the EPA broad authority to regulate greenhouse gas emissions from power plants. [pdf Ruling Here] The regulation -if any- must come from congress, not regulatory fiat from an executive agency.
theconservativetreehouse.com
Oh my, Congress is actually going to have to live up to its job as enumerated in the Constitution. I will take bets that they won't do a thing but bloviate.