christian nation issues

http://www.bbc.co.uk/news/uk-politics-16224394 I remember Barrack Obama saying the USA isn't a Christian country. Never thought I'd be envying the USA about this type of thing. Also, I'd have thought it far more likely the "moral collapse" in the UK is due to the astronomical wealth...

I was listening to the Alan Colmes show last night on Sirius Left and some guy called in talking about how the 4 Christian principles in Washington's Farewell Address, which were once part of public school curriculum, had been censored, suppressed, and just not taught in the schools anymore...

Does anyone know of a website that has quotes by the founding fathers that would debunk the alleged christian foundation of the US?