Thus we have Thomas Jefferson's
Wall of Separation Between Church and State.
I've discussed this with fundies of various religions, and many of them see the Establishment Clause of the First Amendment as hostile to their particular religion, and to no one else's. They also didn't seem to like it when I exercised my Freedom of Speech to claim, "
While the United States may have been founded on Christian principles, that does not make the United States a Christian nation." Religion does not seem to mix well with free speech, free press, or the right for a person to determine his or her own religious beliefs (or lack of belief).
(*"Congress shall make no law respecting an establishment of religion".)