Maybe, but this is related to immigration, not to free speech or religion.
“Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof” ... I don’t see how Congress can prohibit entry based solely on religion.
This man is by far no dope and he’s figured out that the first squeals are going to be FIRST AMENDMENT. And he will have the rapid response that others have given here. Once again the leftists will be left with egg on their face.