Sorry.  As a native Bostonian, I would like to point out to you that 
(a) the nation was not founded by Puritans -- various colonies were founded for a variety of reasons, including in the case of the colonies that later became the slave states commercial greed.
(b) the Puritans were concerned with religious freedom only for themselves.  Rhode Island was founded largely by people who were exiled from Massachusetts, and we do commemorate (with statues on the State House lawn) Quakers who were murdered by the Puritans for their faith.
The ancestors of today's Baptists and today's Methodists made it clear that they would reject the Constitution if it did not contain provisions to protect our country from people like many of their descendants turned out to be.