"The Supreme Court will hear arguments Wednesday in a case that challenges one of the Obama administration's most significant environmental regulations.

In Michigan v. Environmental Protection Agency, states and industry groups are asking the justices to overturn the EPA’s 2011 mercury and air toxics standards limiting certain air pollutants from coal-fired power plants.

The court is being tasked with deciding whether or not the EPA properly took into account the costs of the regulation when it was writing it."

Timothy Cama reports for The Hill March 23, 2015. [2]