Opinion
On April 2, 2008, exactly one year after the landmark U.S. Supreme Court decision in Massachusetts v. EPA, 12 states, supported by an additional five states as amicus curiae, as well as the District of Columbia, the cities of New York and Baltimore, and a number of environmental organizations, filed a petition for mandamus with the U.S. Court of Appeals for the District of Columbia Circuit seeking to compel the U.S. Environmental Protection Agency to act on remand within 60 days.