Conversation so far:
does the us constitution guarantee separation of church and state
The first amendment to the US Constitution states Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof.“
Where does the phrase separation of church and state originate?
The phrase separation between church & state is generally traced to a January 1, 1802, letter by Thomas Jefferson.

Question: Who was the letter addressed to?
Self-contained rewrite: who was the january 1, 1802 thomas jefferson letter in which the phrase separate between church & state is generally traced to address to