Hi mcull! Here are a few more titles you can check:
Kevin Phillips, The Cousins' Wars: Religion, Politics, and the Triumph of Anglo-America (New York: Basic Books, 1999)
Stephen M. Feldman, American Legal Thought from Premodernism to Postmodernism: An Intellectual Voyage (New York: Oxford University Press, 2000)
And here is the title Donnie mentioned:
Patricia U. Bonomi, Under the Cope of Heaven: Religion, Society, and Politics in Colonial America (New York: Oxford, 1988)
Good luck on your essay assignment. Let us know how it goes!