As I remember that was the way it was in the 50's/60's and maybe a little later, could be mistaken. That's exactly the way it should be now.
Guest workers could pick the crops AND LEAVE - go home - right after the picking is done - or go onto another crop in a different region. Today's farmers bring in illegals to pick the crops then help them apply for welfare and food-stamps until the crops need picking again OR until the illegals find better paying jobs.
That's a nightmare for citizens forced to support wealthy farmers because step two is when the farmers bring in MORE illegals to replace the ones who got better jobs or vegged out on welfare.
It's nuts.
Our schools, hospitals, social service agencies, interstate systems, neighborhoods and culture are stressed to the breaking point so damn liberal ‘elites’ get cheap labor and new voters. It's got to stop and Trump's the only person who can do it... everyone else is too deep into 'donors'... and corruption.