We all know how this administration hates the constitution.
Check it out:

The Environmental Protection Agency’s proposed rule to cut carbon dioxide emissions from power plants is unconstitutional because it violates the Tenth Amendment and the Fifth Amendment, according to a noted liberal Harvard law professor.

“In short, coal has been a bedrock component of our economy and energy policy for decades,” writes constitutional law professor Laurence Tribe. “The [EPA’s rule] demonstrates the risk of allowing an unaccountable administrative agency to ‘make’ law and attempt to impose the burden of global climate change on an unlucky and unfortunate few.”