This country has tried this experiment before. www.npr.org/sections/the...
npr.org
When The U.S. Government Tried To Replace Migrant Farmworkers With High Schoolers
In 1964, a program that brought migrant Mexican laborers to the U.S. ended. So the U.S. recruited American students to pick crops instead. When they saw their living conditions, strikes ensued.
Brooke Rollins on farm laborers: "There will be no amnesty. The mass deportations continue, but in a strategic way. And we move the workforce toward automation and 100% American participation, which with 34 million able-bodied on Medicaid we should be able to do fairly quickly."