Boru nailed in the second post. The whole point of the Bill of Rights is to prevent the majority from tyrannizing the minority. And as Min pointed out, Christianity is highly fragmented. They know it too which is probably the only thing which has prevented a constitutional amendment to weaken Church-State Separation. The words of James Madison are hard to argue with: "Who does not see that the same authority which can establish Christianity, in exclusion of all other Religions, may establish with the same ease any particular sect of Christians, in exclusion of all other Sects?"
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein
Albert Einstein