While at HPWorld in Philadelphia last year I took a walking tour the
historic sites.  It was interesting and worth noting that the Constitution
was written in Philadelphia, a city that at that time advocated diversity
in religious beliefs.  George Washington and other founding fathers
worshiped at Christ Church, less than a block from the Quaker Friends
church.  Wasn't Franklin a Quaker?   If I remember correctly Philadelphia
had more different religious organization in the city than any other city
in the nation at the time.

Many of the founding fathers were first generation descendants of colonist
that came to America because of religious persecution, but at the same time
almost every one of the founders was "God fearing".   I believe that they
would have been very unhappy if they thought the constitution would be
interpreted in a manner which resulted in a citizen being told that they
can not pray in a public place -- their own beliefs would have been
challenged.  But clearly they felt that individuals should have a right to
choose and practice the religious doctrine of their choice when ever and
where ever.

I'm not sure what would have happened if a couple of Warlocks and Witches
had setup a church in Philadelphia at the same time,  they may have felt
that it was pushing the sensibilities.   The witch hunts in Salem were
still fresh in everybody's minds.  After all they had occurred in just the
generation before...