David Barton takes apart the liberal straw-man argument on America as a “Christian nation.” Liberals use an ahistorical (extreme) definition of “Christian nation” to “prove” that we are not one. But Barton explains that our republican form of government flows from the biblical beliefs of our mostly Christian Founders — who set up a system that allowed religious pluralism, free market economics, freedom of conscience and other cherished American principles to thrive.