I definitely agree the corn subsidies are wasteful and over-funded. Also I'm sure your well meaning, but the myth that it takes 2 gallons to produce 1 gallon of ethanol seems like misleading oil propaganda. What is your source on that claim?
It takes two gallons of fossil fuels (counting fertilizer, transportation, and all other inputs) to make one gallon of ethanol
Even corn ethanol (one of the worst ways to make ethanol) still produces 30% more energy than the energy used to produce it. And with better production practices, it could be a lot better (and might be right now since the numbers are somewhat old) than that. That means less pollution.
Country Type Energy balance
United States Corn ethanol 1.3
Germany Biodiesel 2.5
Brazil Sugarcane ethanol 8
United States Cellulosic ethanol† 2–36
Source:https://en.wikipedia.org/wiki/Ethanol_fuel#Environment
Lol, Do you really think the law will apply to them?