Wonderful discussion. Back in the 1950's, LDS Scholar Hugh Nibley gave an interesting talk on this Ancient Law of Liberty. Since he specifically discusses it's origin, and the political efforts towards religious uniformity throughout history, along with the US Constitution's restoration of that ancient law of liberty, I think it germane to the discussion: http://maxwellinstitute.byu.edu/publications/books/?bookid=54&chapid=506