Did you know during World War II we did NOT allow German men of military age to come to the United States? Or Japanese men? Or women for that matter...
Even more recently, Carter banned all Iranians from entering the US, cancelled all visas already issued, and expelled thousands of Iranians that were then in the country.
Of course, people argue that was a NATIONALITY and not a RELIGION, so it isn’t the same thing.
This ignores the fact that muslims are loyal to Islam first and conventional nationality a distant second, if at all. Islam is in fact a virtual nationality with its own laws and no borders. Adherents should be viewed as foreign nationals regardless of their conventional nationality or immigration status. As far as I am concerned, anyone that adheres to Islam has in fact renounced their US citizenship. They are no more Americans than the Russian sleepers pretending to be Americans during the cold war.