Noah Millman says it well:
Some of “them” are “us.” There are American Muslims. There is an there are various American Islam(s). That’s just a fact. There are certainly Muslims (mostly non-American) who deny that fact who want to argue that Muslims in America can have no true loyalty to America, but must be loyal to some imaginary global Islamic communal interest. And there are certainly non-Muslims who would deny that fact in similar terms. But a fact it is. The problem with this Republican line is not so much that it discourages moderate Islam though obviously the message “no Muslims wanted” is a terrible one but that it quite blatantly writes American Muslims out of the American people.