You realise food is cheap because of taxes/subsidies. If we had to pay the true cost of food it would be expensive. And the politician that did wouldn't be liked much as well.
Sugar is particularly regulated, with the government strict quotas and tariffs on imports, and domestic allotments to produces. If you produce more than your allotment, it is illegal to sell in the US. The whole scheme is to hold prices high to support famers (agribusiness really), not low.