Policy File Index Subscription has been cancelled effective August 31, 2022. Policy File Index draws its content from public policy think tanks, university research programs, research organizations and publishers. Some well known contributors include: the American Enterprise Institute, Brookings Institution, Carnegie Endowment for International Peace, Cato Institute, Center for Defense Information, Center for Strategic and International Studies, Council on Foreign Relations, Democratic Leadership Council, Economic Strategy Institute, Federation of American Scientists, Heritage Foundation, Hoover Institution, Hudson Institute, Institute for International Economics, International Monetary Fund, National Center for Policy Analysis, Organization for Economic Cooperation and Development, RAND Corporation, United States Institute of Peace, and the World Bank.