There was a massive need for people with strong backs to take advantage of the plethora of Ground Floor Opportunities in the burgeoning steel industry We don't have such a need to day. Nowadays, large crews of men to dig huge holes with picks and shovels just isn't done.
Uh, guy, there are still shitty jobs that only the immigrants want... that's the whole point.
Again, not true. At places like Ellis Island, prospective immigrants were vetted. If they couldn't work, if they were incurable or had social diseases, if they were criminals or had severe moral deficiencies, they were sent back. MS13 type animals were not invited and honored. Once they got in, they were on their own- no Free medical care or food stamps.
Uh, guy,... Criminals got in back then, too. Did you ever hear of the Mafia? it was kind of a big deal.
So we have 11,000,000 undocumented immigrants, of whom, at most 10,000 belong to MS-13. That's like one tenth of one percent.
Oh, you realize the reason why we have social security and welfare and food stamps today is because when we had recessions, they had to keep all those immigrants from rioting, right?