It's not mentioned in that article but using corn for fuel has decreased the amount of corn available for food which has caused the price of corn to increase in poor countries where corn makes up the staple of the diet and the people can't afford the increased cost.
We have a government that tells us what kind of fuel we can put in our cars, what kind of car we can drive, what kind of fats we're allowed to eat, how many gallons of water we can flush down our toilets, and now what kind of health care insurance we're allowed to buy. Whatever happened to freedom and liberty?