[aquadrop]

I think what you enumerated shows that "America"'s culture is immigration. Von Neuman was Hungarian, Arno Penzias (big bang) immigrated from Germany, Borlaug's ancestors came from Norway etc USA had influx of people from the beginning, both voluntary and forced immigration. It was "New World", where those who didn't like the old one or wanted to restart went. And it's ironic to see now Trump trying to cut off immigration.