Cato Institute, Pioneer Institute for Public Policy Research, Citizens for a Sound Economy 2, Environmental Literacy Council, George Mason’s Mercatus Center, Property and Environment Research Center, Americans for Prosperity Foundation, Center for Equal Opportunity, Heritage Foundation, Institute for Energy Research, Institute for Humane Studies, Atlas Economic Research Foundation, Bill of Rights Institute, Ethics and Public Policy Center, Youth Entrepreneurs of Kansas, Citizens for Congressional Reform Foundation, Institute for Justice, Frontiers of Freedom Institute, Reason Foundation,Texas Public Policy Foundation, National Foundation for Teaching Entrepreneurship,The Phillips Foundation, Federalist Society,John Locke Foundation, Institute for the Study of Human Origins,Fund for American Studies, American Enterprise Institute & Brookings Joint Center for Regulatory Studies, James Madison Institute, Manhattan Institute, John W. Pope Center for Higher Education Policy, Washington Legal Foundation, Young America’s Foundation, Foundation for Individual Rights in Education, Leadership Institute, Foundation for Research on Economics & the Environment, American Council on Science & Health, Competitive Enterprise Institute, Laffer Center for Global Economic Growth, National Center for Policy Analysis, Association of Private Enterprise Education, American Legislative Exchange Council, Commonwealth Foundation for Public Policy Alternatives, Capital Research Center, Center for Independent Thought, Tax Foundation,National Federation of Independent Business (NFIB) Legal Foundation, Independent Women’s Forum, Carbon Dioxide & Global Change Center, International Foundation for Research in Experimental Economics,Mackinac Center for Public Policy, Acton Institute, Market Based Management Institute, Fraser Institute, Media Institute, Pacific Research Institute, Heartland Institute, American Council for Capital Formation, Goldwater Institute, George C. Marshall Institute, Institute for Research on the Economics of Taxation, Libertarian Review Foundation, Americans for Tax Reform, Students in Free Enterprise, Buckeye Institute for Public Policy Solutions, Center for Excellence in Education, Center for Freedom & Prosperity Foundation,Ayn Rand Institute, National Tax Limitation Foundation,International Policy Network, North Carolina Institute for Constitutional Law, Becket Fund for Religious Liberty, Free Enterprise Education Institute, Atlantic Legal Foundation, South Carolina Policy Council for Political Economy, Center for Individual Rights, Media Research Center, Texas Justice Foundation, Future of Freedom Foundation, Foundation for Economic Education, Pacific Legal Foundation, National Taxpayers Union Foundation, Foundation for Human Development, Institute for Policy Innovation, American Spectator, Critical Review Foundation, Galen Institute, Hudson Institute