I don't think either extreeme is correct. People love to quote what the founding fathers did or didn't intend as if in some way it lends creedance to their side of an argument. Truth be told the founding fathers probably wouldn't have a clue how to run this America. The ACLU has done some wonderful things in its history. So did Hitler. The belief in a Supreme Being has been the inspiration for the butchering of millions of dissidents. Oh yea, and those great W.W.J.D. braclets. There isn't a conspiracy to overthrow Christian America, rather what you are seeing is the gradual changing of the gaurd which has happened in other nations for hundreds of years. Look at France, Spain, Europe, the middle east. We are a very young country, in the grand scheme of things. Growing pains are an absolute.
Don't worry, the Christian fabric of America won't be destroyed by the ACLU or Darwinism, or even Girls Gone Wild, or any other movement. It will just change and adapt, as it has since it's birth 2000 years ago when the first chocolate rabbit laid the first painted egg.
And oh Yea,... Superman has converted in the new movie. He's now Canadian!!!!!