Just one question: can you eat photovoltaic cells?
Corn is edible, and I’d be more than happy to eat cornmeal for years in the event of a global war that stopped food imports/exports. This is precisely the reason for agricultural subsidies, to ensure our nation can feed itself if all agricultural trade is cut off. We’d grind up field corn and eat cornmeal instead of starving to death with plenty of electricity but no food.
Ethanol corn is not the food corn, to be clear. It is bred to have as little sugar and as much starch as possible. It's inedible, unless you're a pig that likes corn byproduct or drinking corn oil. And, in the event of global war, I think we could end our enormous agriculture exports and be more concerned with a nuclear war than if we can eat corn for every meal.
If this was about that, we would grow something else. This is about agricultural lobbiests bribing congress to steal unfathomable sums of wealth from the public through subsidy.
If a global war can stop food imports/exports, you are very close to a civilization collapse if dependent on fossil fuels. Once the oil supply is cut off (which happens long before food), everything stops. You'd be better off relying on solar panels and having energy security, which is the most critical thing to have. Fossil fuel-based power plants can be bombed, but solar panels all over the country can never be bombed. And, there is already an overabundance of food production, specifically corn, soybeans, and milk, in the US.
Corn is edible, and I’d be more than happy to eat cornmeal for years in the event of a global war that stopped food imports/exports. This is precisely the reason for agricultural subsidies, to ensure our nation can feed itself if all agricultural trade is cut off. We’d grind up field corn and eat cornmeal instead of starving to death with plenty of electricity but no food.