You are joking, right? NOBODY has "cut them off into their own ghettos" but themselves! It is their choice, their education, their mandate to live in their own Muslim enclaves, and avoid the "contamination" of the "infidels."
And for those reasons I suspect it's a good thing that Sebelius and all those others chose to "contaminate" them with their visit.
Letting these Muslims live apart and in a cloistered mental atmosphere just invites this kind of radical separatism.