That question is deeply entangled with American race relations. People don't really see themselves as part of one community.
The common answer from Americans to such ideas is that yeah yeah you can do that in European country X because it's (racially) homogeneous there but it would never work in the US.
The common answer from Americans to such ideas is that yeah yeah you can do that in European country X because it's (racially) homogeneous there but it would never work in the US.