The Renewable Fuel Standard has helped to increase the amount of biofuels consumed in the United States while also contributing to increased grain/oilseed price volatility. The nested structure created values biofuels differently based on arbitrary characteristics. Biodiesel has been an important biofuel for blenders dealing with mandate compliance in both 2011 and 2013. In 2011, increased sugarcane ethanol prices forced increased biodiesel demand and hence prices, resulting in biodiesel exceeding its mandate for the first time and competing for the remainder of the advanced biofuel mandate. Similarly, in 2013 excess biodiesel was utilized to help breach the ethanol blend wall causing RIN prices to converge. In both years it caused short term excess biodiesel plant profit as they took advantage of higher prices while input costs were not increased as rapidly.