For the record, Sergey Brin, Elon Musk, Peter Thiel, Patrick and John Collison, and Jerry Yang are foreign-born. Probably more would not have been here if their parents had not been allowed to immigrate. Now that you mention it, I would trade a few of them away, but I doubt the market would like to erase their work.
The first three we would be better off without, don’t recognize the last three. Not sure you are really selling your point.