Joel D. Aberbach is Distinguished Professor of Political Science and Public Policy and Director of the Center for American Politics and Public Policy at the University of California, Los Angeles. Professor Aberbach's research focuses on American and comparative politics, with emphasis on legislative-executive relations and broader issues of executive politics and policy making. His books includeIn the Web of Politics: Three Decades of the U.S. Federal Executive, which he coauthored with Bert A. Rockman, and Keeping a Watchful Eye: The Politics of Congressional Oversight. He is cochair of the Research Committee on Structure and Organization of Government of the International Political Science Association. He has been a Fellow at both the Center for Advanced Study in the Behavioral Sciences and the Swedish Collegium for Advanced Study in the Social Sciences, and a Senior Fellow at the Brookings Institution in Washington, D.C.
Mark A. Peterson is Professor of Public Policy and Political Science at the University of California, Los Angeles. Professor Peterson is a scholar of American national institutions, focusing on the presidency, Congress, and interest groups, as well as national healthcare policy making. Former chair of the Department of Public Policy, he has been a guest scholar at the Brookings Institution and worked in the U.S. Senate. He is chair of the National Advisory Committee for the Robert Wood Johnson Foundation's Scholars in Health Policy Research Program. His writings includeLegislating Together: The White House and Capitol Hill from Eisenhower to Reagan.