well actually the corn used for e85 gets many uses not just for fuel
"A variety of highly valued feed co-products, including gluten meal, gluten feed and dried distillers grains, are produced from the remaining protein, minerals, vitamins and fiber and are sold as high-value feed for livestock. In addition to grain, ethanol is also produced today from wood waste, cheese whey, waste sucrose, potato waste, brewery waste, and food and beverage wastes."
"Each bushel of corn can produce 2.5 gallons of ethanol fuel. Only the starch from the corn is used to make ethanol, leaving the protein and valuable co-products for other uses. For example, that same bushel of corn can also produce: 1.5 pounds of corn oil, 12.4 pounds of 21% protein feed, 3 pounds of 60% protein gluten meal, and 17 pounds of carbon dioxide (used for carbonating soft drinks and other beverages)."
And I think we can support both food and fuel considering the many uses goten out of it with making ethanol. And if we couldnt there wouldnt be this uprising of this fuel, research has gone into this, just wasnt some overnight deal, im sure that has come up before.