Jacob Hacker is professor of political science at the University of California at Berkeley, where he heads the Center on Health and Economic Security at the Boalt Law School. A frequent media commentator and author of numerous scholarly and popular articles, he is the author of four books, most recently The Great Risk Shift: The New Economic Insecurity and the Decline of the American Dream.Contributors: Jacob Hacker: "Health Insecurity and the Middle Class"; Elizabeth McGlynn and David Meltzer: "Health Quality"; Brandon McKelvey and Jill Quadagno: "The Transformation of American Health Insurance"; Katherine Swartz: "The Uninsured and Underinsured"; Elizabeth Warren: "Medical Bankruptcy"