President Harry Truman wrote to Pope Pius XII in 1947 that "This is a Christian nation." He certainly did not mean that the United States has an official or legally-preferred religion or church. Nor did he mean to slight adherents of non-Christian religions. But he certainly did mean to recognize that this nation, its institutions and laws, was founded on Biblical principles basic to Christianity and to Judaism from which it flowed.

As he told an Attorney General's Conference in 1950, "The fundamental basis of this nation's laws was given to Moses on the Mount. The fundamental basis of our Bill of Rights comes from the teachings we get from Exodus and Saint Matthew, from Isaiah and Saint Paul. I don't think we emphasize that enough these days. If we don't have a proper fundamental moral background, we will finally end up with a totalitarian government which does not believe in rights for anybody except the State."

I’m with Harry on this one.

Quote from “Is America a Christian Nation?” by Carl Pearlston