The Environmental Protection Agency (EPA) wants to increase the amount of ethanol and other biofuels in the nation’s fuel supply. But the volumes proposed Wednesday under the renewable fuel standard (RFS) still fall under targets written into the 2007 law that created the program. That ended up angering both the ethanol industry, which wants more of its product to be mandated, and the oil industry, which wants the program rolled back. The agency plans to mandate that 18.8 billion gallons of biofuels be blended into the country’s gasoline and diesel supply next year. Of that amount, 14.8 billion gallons can...