Your statement is correct. Technology does cause the same problems as cheap labor. But it doesn't change what I said. We're not talking about replacing men wit

Your statement is correct. Technology does cause the same problems as cheap labor. But it doesn't change what I said. We're not talking about replacing men with machines, We're addressing the simple substitution of an inexpensive non-citizen for a more expensive citizen in a job. There apparently aren't machines available for these jobs so business seek out the cheapest human beings instead. If we didn't have our current political structure which attaches certain rights and privileges to citizenship then the USA would be like China where workers are treated like light bulbs. Once machines can do everything a man can your argument will be pertinent. But remember that, should the time come that machines are the full equal of men, you may need to answer certain questions such as "Does this machine have civil rights or a vote in society?", "Can I trust this machine to do this job?", and "What sort of salary, if any, should I pay a machine for doing this job?". That is topic for another discussion and a real can of worms that I don't feel like opening right now.