Debaters frequently support their arguments witch research provided by the Council on Foreign Relations, Human Rights Watch, Brookings Institution, Center for American Progress and Cato Institute. All of the above organizations are think tanks. Think tanks provide policy research and analysis of various political and economic issues, shape innovative ideas, and significantly impact public policy on the issues of economy, immigration, public education, health policy, science and technology, social policy, national security and law enforcement. If you are looking for a think tanks in a specialized field, use the following two directories.