The D.C. Circuit granted in part and denied in part a petition challenging EPA's update to the Cross-State Air Pollution Rule. Environmental groups and Delaware argued that EPA violated the CAA by failing to require upwind states to eliminate their significant contributions in accordance with the de...

The D.C. Circuit upheld EPA's implementation of its Renewable Fuel Standards Program, which requires transportation fuel sold in the United States to contain a minimum volume of renewable fuels. Some industry groups argued that EPA arbitrarily refused to revise its 2010 point of obligation rule that...

The U.S. Supreme Court granted the Trump Administration's request to stay a district court order enjoining the use of military funds to build portions of a border wall along the Mexican border. The Court found that the government made a sufficient showing that nonprofit groups who filed suit had no ...