Corny Capitalism: This is one campaign promise we wish President Trump would break. But alas, he just told his EPA to give up any thought of cutting back on the federal government's anti-consumer, anti-environment ethanol mandate. Sad. The story begins in 2005, when President Bush approved the Renewable Fuel Standard program as part of an energy bill, which required oil refiners to blend in predetermined amounts of "biofuels" into their gasoline, starting at 4 billion gallons in 2006. A revised version of the RFS, which Bush signed in 2007, expanding the program, requiring ethanol levels to climb steadily to 36...