Several petroleum refiners have filed a challenge to current federal requirements that 1.28 billion gallons of biomass-based diesel fuel be blended into the nation’s diesel supply in 2013. Am. Fuel & Petrochemical Mfrs. v. EPA, No. 12-1464 (D.C. Cir. 11/21/12). The refiners separately petitioned the U.S. Environmental Protection Agency (EPA) to reconsider the 2013 biomass diesel requirements administratively. An American Fuels and Petrochemical Manufacturers news release states that the biomass-based diesel requirement would add up to $381 million to consumers’ transportation fuel costs in 2013. The press release points to unintended consequences of the increase and concludes, “ [b]efore increasing the 2013 volume, EPA must resolve the pervasive problem that exists in the biodiesel market of Renewable Identification Number (RIN) fraud. To date, more than 140 million fraudulent RINs have been sold to unsuspecting refiners concerned with meeting their RFS obligations.” The press release suggests that the number of fraudulent RINs will grow as investigations continue.