Was in the 19th and early 20th centuries. At those times the USA pretty much had open borders. If you want to shut the country off to new ideas and talent then I feel sorry for you. You are all scared they are going to bankrupt us but the only reason that is an issue is because of the government and not the immigrants. Don't blame the immigrants blame the government. The greatest accomplishments of mankind have not come under the guise of government so why are we limiting ourselves. Anyone for closed borders has a closed mind and has bought into the government running our lives.
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