Sorry to be so obvious, but isn’t it clear that what the United States needs is a Democratic Richard M. Nixon? No, not that one. We’ve had plenty of truth-bending, political dirty tricks and abuse of authority from both political parties over recent years. I’m thinking of the “other” Nixon, the one who longed for a place in history and whose shrewd instinct for the political center produced: the Environmental Protection Agency; arms talks with the same Soviet Union he had built a career on denouncing; wage and price controls that violated every canon of his party’s philosophy; and, of...