Opinion: Corn farmers may be betrayed by Trump turnaround

The Renewable Fuels Standard was enacted into law back in 2005 as a way to help the U.S. toward oil independence and provide some environmental benefit on the idea that burning ethanol releases less carbon dioxide into the atmosphere than burning fossil fuels. The Renewable Fuel Standard has also been public enemy number one with Big Oil since day one. Now what? Dave Dickey explores.