Michael Barone is the author of the new National Politics and Our Presidents and a writer for U.S. News & World Report. (Photo: Visual Arts Services)

David Brady is deputy director and senior fellow at the Hoover Institution. He is also the Bowen H. and Janice Arthur McCoy Professor of Political Science and Leadership Values in the Stanford Graduate School of Business and professor of political science in the School of Humanities and Sciences at the university. (Photo: Visual Arts Services)

John F. Cogan is the Leonard and Shirley Ely Senior Fellow at the Hoover Institution and a professor in the Public Policy Program at Stanford University, where he has had a continuing appointment since 1980. (Photo: Visual Arts Services)

Niall Ferguson, Hoover senior fellow, is the Laurence A. Tisch Professor of History at Harvard University and a noted author. Ferguson also is a senior research fellow at Jesus College, Oxford University. (Photo: Visual Arts Services)

Morris P. Fiorina is a senior fellow at the Hoover Institution and the Wendt Family Professor of Political Science at Stanford University. Formerly he was the Frank Thompson Professor of Government at Harvard University, where he taught from 1982–1998. From 1972–1982 he taught at the California Institute of Technology. (Photo: Visual Arts Services)

Jack Goldsmith is a Harvard Law School professor who has written a number of texts regarding international law and the Internet. From October 2003 to July 2004, he served under Attorney General John Ashcroft and Deputy Attorney General James Comeyas an Assistant United States Attorney General for the Office of Legal Counsel in the Department of Justice. That office provides legal opinions and advice to the president and the executive branch on legal issues of special importance or complexity, including the limits of executive power. (Photo: Visual Arts Services)

Thomas H. Henriksen is a senior fellow at the Hoover Institution. His current research focuses on American foreign policy in the post-cold war world, international political affairs, and national defense. He specializes in the study of U.S. diplomatic and military courses of action toward terrorist havens, such as Afghanistan, and the so-called rogue states, including North Korea, Iraq, and Iran. He also concentrates on armed and covert interventions abroad. (Photo: Visual Arts Services)

Josef Joffe, the Marc and Anita Abramowitz Fellow in International Relations at the Hoover Institution, is publisher-editor of the German weekly Die Zeit. (Photo: Visual Arts Services)

Stephen Krasner, a Hoover Institution Senior Fellow, has been named director of policy planning for the U.S. State Department, and will work closely with U.S. Secretary of State Condoleezza Rice, also a Hoover Senior Fellow. (Photo: Visual Arts Services)

Harvey C. Mansfield, Jr. is the William R. Kenan Jr. Professor of Government at Harvard University, where he has taught for more than forty years. He has held Guggenheim and NEH Fellowships, has been a Fellow at the National Humanities Center, and in 2004 he received the National Humanities Medal. (Photo: Visual Arts Services)

Douglas Wilson is a Lincoln presidential scholar and the codirector of the Lincoln Studies Center at Knox College. Wilson has twice been awarded the Lincoln Prize: for his books Honor’s Voice: The Transformation of Abraham Lincoln and Lincoln’s Sword: The Presidency and the Power of Words. (Photo: Visual Arts Services)