The American Fuel and Petrochemical Manufactures this week filed a lawsuit against the Environmental Protection Agency challenging the EPA’s biofuels policy. The organization is just the latest of many challenging the EPA. AFPM represents oil companies and said the petition to the U.S. Court of Appeals targets the rulemaking around the Renewable Fuels Standard from 2014 to 2016. Agriculture groups did the same last month, kicking off the widely-expected legal review of the policy, according to Reuters. Just last week, DuPont also filed a motion to intervene in the lawsuit. DuPont argues the final volumes jeopardize the company’s cellulosic ethanol investments as the company is in the process of launching commercial cellulosic ethanol production at an Iowa facility.