Sorry to disappoint, but if you read the founding fathers, Thomas Jefferson makes the point that the country was born to satisfy any manner of Deism, or even a complete absence of Deistic belief.
Maybe you don't like it. Maybe I don't. Tough. It's (partly) why the country was created.
Adams, Madison, Webster, a huge majority of the signees of the Declaration of Independence, and other "genuine" Christian forefathers seem to be conveniently ignored.
Nonetheless, while they all envisioned a nation of citizens respecting the faith of others, I can't imagine they imagined any Wiccan governors or town Elders. Ever.