Signed by George Washington, ratified under John Adams.
Below is from Wikipedia:
Article 11, reads:
"As the Government of the United States of America is not, in any sense, founded on the Christian religion; as it has in itself no character of enmity against the laws, religion, or tranquillity, of Mussulmen; and, as the said States never entered into any war, or act of hostility against any Mahometan nation, it is declared by the parties, that no pretext arising from religious opinions, shall ever produce an interruption of the harmony existing between the two countries."
Article 11 has been a point of contention regarding the proper interpretation of the doctrine of separation of church and state. Supporters of the separation of church and state contend that this article is significant in that it confirms that the government of the United States was specifically intended to be religiously neutral. Supporters of the "Christian Nation" theory dispute this, arguing that the article in the treaty carries little or no significance. Official records show that after President John Adams sent the treaty to the Senate for ratification in May of 1797, the entire treaty was read aloud on the Senate floor, including the famous words in Article 11, and copies were printed for every Senator.
A committee considered the treaty and recommended ratification, and the treaty was ratified by a unanimous vote of all 23 Senators. The treaty was reprinted in full in three newspapers, two in Philadelphia and one in New York City. There is no record of any public outcry or complaint in subsequent editions of the papers.Treaty of Tripoli - Wikipedia, the free encyclopedia
When confronted with the very clear laws regarding separation, of church and tate, the Fundies love to say that the founding fathers intended the U.S. to be a Christian country, but nothing could be further from the truth. It is their attempt at revisionist history. Christians do not have a monopoly on ethics or morals. Christianity is not the only path to morality. In fact, if I look at most the its practitioners, I'd say Christianity leads people away from morality...just look at how the majority of them justify the killing of innocent Iraqis. "Who Would Jesus Bomb?", indeed.