By the way Cowboy, "Separation of Church and state" is never directly mentioned in the Constitution.
Jefferson wrote about a "hedge or wall of separation between the garden of the church and the wilderness of the world" in a January 1802 letter addressed to the Danbury, Connecticut, Baptist Association, and published in a Massachusetts newspaper echoing the language of the founder of the first Baptist church in America, Roger Williams.
From that our beloved "Supremes" thought "Hey that sounds pretty good, let's throw it in the mix."
