As far as migrant Latino workers go, they have been used in Minn. for decades. My one Grand-father used them, same ones repeatedly, already in the twenties and thirties.
They would come and go every year.
Recently, pne small town, less than a hundred people had a permanent pad for them to put their trailers on.
They have not been around for over five years now, so I stopped at the bar in town and asked what happened.
They said people hire "others" rather than singing contracts with the migrants, they charge less.
Are they illegals? He said no one asks.
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Some years back, one of the periodicals I used to subscribe to had an article about how the illegals are hurting landscapers.
They spoke with one non-Latino white gent who said one of his workers, who he admitted was an illegal, at that time, screwed him when he left and started running his own crew.
Lost plenty of business to the former worker.
They looked up the former worker, who admitted he had done that, and said he charged less than his former boss but at the same time, admitted that what he had done was really cutting off his nose to spite his face as one of his workers had done the same thing to him.
He admitted in the long-run, every one was suffering and not one was gaining as far as employment and staying in business.