There are some very weak arguments:
- Of course, the founding fathers were religious (as it's being said at minute 3:00), including Jefferson. Thus their ethics were built on or supported by their religious beliefs. But from their European experiences they knew very well that interference of the state in religious matters would cause trouble.
- At 3:39 he quotes O'Douglas that the American institutions presuppose a Supreme Being. I don't know whether this is still the view of Supreme Court judges today. Anyway, the illustration of a Christian church is just propaganda. And what do you do with atheists? Aren't they part of the American people?
- What does bad behavior in school have to do with decline of religion?
- "Crime rates rose". It's simply not true. http://en.wikipedia.org/wiki/Crime_in_the_United_States