When Woodrow Wilson was elected as a ruling elder in the Presbyterian Church in 1897, his preacher father allegedly remarked, "I would rather that he held that position than be president of the United States." Fifteen years later he was both. Easily one of the most religious presidents in American history, almost all of Wilson's policies and important speeches were infused with religious concepts. The son, grandson, and nephew of southern Presbyterian divines, with six consecutive generations of preachers on his mother's side, Wilson viewed his political career as a sacred calling. As he...