Allegheny Institute for Public Policy
America’s Future Foundation
American Enterprise Institute
Annenberg Public Policy Center of the University of Pennsylvania
Arab American Institute
American Foreign Policy Council
Brookings Institution
Buckeye Institute for Public Policy Solutions
Carnegie Endowment for International Peace
Carter Center
Cato Institute
Center for Defense Information
Center for International Policy
Center for National Policy
Center for Economic and Social Justice
Center for Free Market Environmentalism
Center for Law and Social Policy
Center for Nonproliferation Studies
Center for Security Policy
Center for Politics at the University of Virginia
Center for Strategic & International Studies
Center for the Study of the Presidency
Center on Budget and Policy Priorities
Committee for Economic Development
Council on Foreign Relations
Duke Center for International Development
Economic Policy Institute
Ethics and Public Policy Center
Global Beat
Heritage Foundation
Homeland Security Studies and Analysis Institute
Independence Institute
Institute for Contemporary Studies
Institute for Policy Innovation
Institute for Public Accuracy
Institute for Public Policy Research
Institute on Religion and Public Policy
Institute of Public Affairs
Israel Democracy Institute
James A. Baker III Institute for Public Policy
James Madison Institute
Kettering Foundation
Henry L. Stimson Center
International Relations and Security Network
Legal Information Institute
Manhattan Institute
Middle East Review of International Affairs
National Center for Policy Analysis
National Center for Public Policy Research
Population Council
Poverty and Race Research Action Council
Progress and Freedom Foundation
Progressive Policy Institute
Rand
Reason Foundation
Reubin O’D. Askew Institute on Politics and Society
Strom Thurmond Institute of Government and Public Affairs
United Nations Office at Geneva
US Army War College
US Institute for Peace
Urban Institute
Washington Institute for Policy Studies
World Policy Institute
Worldwatch Institute
Yale Institution for Social and Policy Studies