Supreme Court: EPA unreasonably interpreted the Clean Air Act

Washington (CNN) — In a loss for the Obama administration, the Supreme Court ruled that the EPA unreasonably interpreted the Clean Air Act when it decided to set limits on the emissions of toxic pollutants from power plants without first considering the costs of the industry to do so.

The ruling was 5-4, with Justice Atonin Scalia writing for the majority. Justice Elena Kagan wrote the dissent for the four liberal justices.