America as a country would collapse if weren't for people on the bottom of the economic pyramid who provide cheap (or free) labor. When this country was founded Blacks provided that labor and now many Hispanics do that job. Those who are calling for illegal aliens to be sent back to their home countries probably don't recognize this fact.

Anyway, I think it's a closedminded view to say that America shouldn't adapt to its changing culture. If that was the case, women wouldn't vote in this country and we would still have an outright racist, segregated society. Change is going to happen and that change is the increasing prevalence of cultures other than European in this country. You can either change with the times or be left behind.