IN A LETTER to the Vatican in 1947, Harry Truman characterized the United States as a “Christian nation.” For Truman this was likely a statement of fact, an obvious description of what America was and would long remain. For Jonathan Herzog, Truman’s phrase explicates an entire epoch in American politics. The title of his book, The Spiritual-Industrial Complex, inverts Dwight Eisenhower’s warning about a military-industrial complex, suggesting instead a fusion of governmental power and religious zeal.
