Well, I guess we won’t find anything in Tennessee school textbooks about the 1797 Treaty of Tripoli, en.wikipedia.org. According to Wikipedia, the treaty was signed by President John Adams, was ratified unanimously by the United States Senate, and included the words: “the Government of the United States of America is not, in any sense, founded on the Christian religion”

Not surprisingly, from what I see with Google, this treaty has provoked some right-wing denial-outrage in recent years.