The US's strength is/was in part because of immigration. The best and brightest want to come to the US to go to school and then they often stay for the enormous opportunities only available in the US. I want any immigrant that wants to come to the US given a reasonable path to make that happen.

You are right that the Native Americans were completely misplaced by immigrants, but immigration made the US what it is today and I see no reason it won't continue to make the US a uniquely strong country.