This is a very bad example. America is a completely different story as it is a stitched up nation (for lack of better words) from it's very inception and the societal and cultural dynamics are very different from those in Europe. Please don't try to force American solutions to non-American problems.

Furthermore, the US currently is a lot more xenophobic and less accepting of foreigners than Europe is. I'd even go as far as say that in my experience Americans in general tend to be more racist than Europeans as well. And let's not forget USA's far from spotless historical record of treatment of minorities and other groups deemed to be 'different'.