Most of the agriculture department's budget is food stamps.
That being said farm subsidies are a defence measure to ensure the USA will NEVER run short of food. That being said some reduction in farm subsidies is appropriate. Subsidize wheat and cotton. We will have bread and clothes and the rest is not really necessary.
Secondly replace food stamps with the glop send to countries for famine relief. It keeps a person alive and indeed healthy, but nobody wants to stay on it any longer than they have to.