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.
This is a free country. If a group wants to separate themselves from society, it's not a matter of "letting" them or not "letting" them. They will do so if that is their wish.