Upon a google search I’ve found this article, for:
http://www.internationalcopsforchrist.com/proof-that-america-was-founded-as-a-christian-nation/
And several articles, like this, against:
http://www.cnn.com/2015/07/02/living/america-christian-nation/
Without even needing to read these, I can tell you I trust CNN more than International Cops for Christ, whatever that is.