Jacob S. Hacker is the Stanley B. Resor Professor of Political Science at Yale University. A Fellow at the New America Foundation in Washington, DC, he is the author of "The Great Risk Shift: The New Economic Insecurity and the Decline of the American Dream", "The Divided Welfare State, "and, with Paul Pierson, of "American Amnesia: The Forgotten Roots of Our Prosperity"; "Winner-Take-All Politics: How Washington Made the Rich Richer and Turned Its Back on the Middle Class"; "Off Center: The Republican Revolution and the Erosion of American Democracy." He has appeared recently on "The NewsHour...