So what?
Don't you see: If America is more a place then an idea, what difference does it make if they become merged or not? His entire arguement is based on the premise that America is somehow being 'perverted' by too much immigration, yet, if America is only a place, and not an idea, what exactly does it pervert?
It's not that I favor completely unrestricted immigration, but his arguement is illogical.
It's immigration illegal or legal that comes from culture that is the problem. You can't claim diversity or call it a melting pot when 85% of the immgrants come from one culture. It is merely replacing one culture with another.