
Treaty of Tripoli, Article 11 http://avalon.law.yale.edu/18th_century/bar1796t.asp#art11, signed at Tripoli on November 4, 1796, and at Algiers on January 3, 1797 and received ratification unanimously from the U.S. Senate on June 7, 1797; it was signed into law by John Adams (the original language is by Joel Barlow, U.S. Consul). This is a declaration of the secular character of the government of the United States, sometimes misattributed to John Adams, who signed the treaty into law. A portion is also sometimes misattributed to George Washington, and also misquoted as "This nation of ours was not founded on Christian principles."
Treaty of Tripoli (1797)