We pay significant subsidies for corn farmers, but then we have to figure out what to do with way too much corn! The reason everything has corn syrup in it is because it's cheaper than sugar. That's also why ethanol is quite common in gasoline here even though it's bad for fuel economy, power, and engine health.
An entirely separate issue is that we consider corn to be a vegetable, when it's really a grain. Carbohydrates are almost all they have!