Excellent idea. Also, I remember the days of prisoner chain gangs working picking up trash along side the roads and working the fields as well.
We still do that here. :-) We see our County prisoners on the chain gang quite often picking up trash with armed deputies following them in a pickup truck. They don't work in the fields though.
Our farmers claim that not only are the illegals cheaper to hire they can also take the southern TN heat better. We tried hiring teenage boys to help with our hay several years ago and they spent most of their time passed out under a tree with cold rags on their heads from the heat. American kids have become too soft to work in the fields. Too many computers and video games.