This is a way to deal with illegal immigration after they are here. So what is wrong with policing the borders to prevent illegal immigration in the first place?
Packing houses in the midwest have many immigrant workers. It is common to have postings in the plant in Spanish and Vietnamese. Most of the Vietnamese are likely legal immigrants. What about the others?
There is protest (also healthy) solution to deal with the Smithfields and other packers hiring illegals - buy naturally raised beef, pork or poultry from a farmer and find a local butcher to process it for your freezer.
"buy naturally raised beef, pork or poultry from a farmer and find a local butcher to process it for your freezer."
I tried some "natural" beef. Tasteless.