The US could feed people cheaply without using harmful additives. Instead of a $1 McBurger made possible through subsidies, environmental destruction and cancer-causing chemicals we could be eating $1 McChanaMasala or McDal or McLocalSeasonalVegetables.
Billions of people around the world eat rice, beans, legumes, root vegetables with small amounts of locally sourced cheese, meats, fruit, vegetables etc. America's poor eat high fructose corn syrup, highly processed wheat, vegetable oil and the meat from cows and chickens raised on unnatural diets in horribly unhealthy conditions. That's not an improvement.