On April 3, the Environmental Protection Agency (EPA) told the U.S. Court of Appeals for the District of Columbia Circuit that it would reconsider the 2011 requirement to blend 6.6 million gallons of cellulosic biofuels. The announcement comes as part of a case involving the American Fuels and Petrochemical Manufacturers, the American Petroleum Institute, and the Western States Petroleum Association; the plaintiffs challenge the standard, saying the EPA denied petitions to reconsider the requirement after no fuel was produced that year. The EPA requested that the court holds any petroleum industry lawsuit while it reevaluates the requirement.