How can you do that without violating the 1st amendment? The thing that protects your free exercise is the same thing that protects theirs. If you want to say that the 1st amendment doesn't keep Christians out of communities and the state, how it not keep Muslims out? The 1st amendment doesn't exclusively protect Christianity.
Correct!
The correct approach is for the states and Feds to use current law, add additional law and resources, to stop civil rights abuse. For instance if in a city or town if a woman dressed in typical American fashion is accosted by local police for sharia type violations, the power of the Feds should stop that type of civil rights violations just as they once did in the south. Female genital mutilation is child abuse and should be prosecuted as such. Few care what their religion is it is civil rights violations and harboring and festering terrorists is what the real concern is...