The 50 million or so conservative American Christians members of the dominant religion in the most religious of Western societies, with an well organized and funded media presence, a well established independent educational system of their own and their sympathy of many other fellow citizens with at least some of their values are in the process of discovering how difficult it is to establish those values as law in the US.
IMO the argument that a few million American Muslims proselytizing for a non-Western anti-modern religion while many of its leaders are calling for the destruction of the Great Satan are going to do better is absurd.
They are allied to the left. We are at war with the left.