okay apparently since there is a lack of the "It's founded on Christian principles" side answering the "exclusive Christian principles" question, and they do not compare the ten commandments to the constitution, or any legal documentation, I think it is best to go ahead and rule out the idea of it being a Christian Exclusive nation-state. I do, however, feel it to be a RELIGIOUS nation-state, but not an exclusively Christian one.. to disagree with that is to take the Declaration of Independence, and the Constitution and to disregard the specific wording of it. Don't forget that the writer of the DoI, Mr. Jefferson, was flaming Deist; I don't care what church your little source says he was a part of.
And please Jerry. Don't get the terminology of Nation and State/Country mixed up here. United States is a country. Within the United States border there are Americans, and America is an ever-so abstract Nation.