First, a distressing yet humorous look at modern televangelists. The very end segment cracks me up. I call this "Separation from Church and Money"
Did we or did we not first invade this country in search of religious freedom? Were not our leaders, some Christian, some not, overwhelmingly dedicated to the idea that all citizens should be able to practice whatever faith they chose?
Washington Post: "Congress's Bullying Pulpit"
PBS: First Amendment and the Founding Fathers
Wikipedia entry on the Founding Fathers
The Government is Secular