For a perspective... our biofuels programs will kill more then the War in Iraq did.
Sure it's a "lets not feel so bad!" indirect form of starving people. However it's selfish, and when it comes to our corn ethanol not even helpful to us in anyway.
A better option would be to stop all domestic ethanol production and lift the tarriffs off of Sugercane ethanol and buy it from Brazil if your that gung-ho in ethanol. Their ethanol actually has benefits.
However we put huge tarriffs against it, because of the Ethanol lobby.