As the renewable fuel standard faces continued regulatory and legislative uncertainty, DuPont Biofuels is set to open the world's largest cellulosic ethanol biorefinery in Iowa at the end of the month. How will the uncertainty impact production and international partnerships? During today's OnPoint, Jan Koninckx, global business director of biofuels at DuPont, discusses his company's plans to continue expanding its business internationally in response to an uncertain landscape in the United States.