Also consider what it is doing to food supplie overseas. With the U.S. plowing fields to grow Ethanol foreign markets are forced to uproot irreplacable rain forest to make up the difference. Mankind has always had a bad habit of not planning for the future.
With the ever decreasing forest around the world it will eventually affect the ENTIRE world.
There is no perfect solution but there are better ones than food for fuel. Not to mention the subsidies that are given to farmers to grow corn for fuel.
My thought is if they want to grow it let them grow it but let the market dictate what they get paid, not the government.