Administrative Watch
On June 29, 2015, the U.S. Supreme Court ruled in Michigan v. EPA that the U.S. Environmental Protection Agency (EPA) failed to properly consider compliance costs before promulgating the Mercury and Air Toxics Standards (MATS) rule for fossil fuel-fired power plants under Section 112 of the Clean Air Act (CAA). The Supreme Court’s decision could influence future EPA rulemakings and comes at a time when the agency is putting the final touches on a controversial suite of air regulations aimed at reducing carbon dioxide emissions from power plants.
