I think it must be God ordained that some of the founding fathers became diest with its exclusionary policies about state sanctioned religion. Here is the definition:
Deists abandoned the belief in the divinity of Jesus, the trinity, any notion of predestination, the Bible as the divinely inspired word of God, and state-sponsored religion.
Although is is an error in judgement, it did keep them from establishing state sanctioned denominations. This afforded Americans with true freedom of choice in religion. How all this will work out in the long term, we will have to see.