CITES is one of the largest and oldest conservation and sustainable use agreements in existence. Participation is voluntary, and countries that have agreed to be bound by the convention are known as Parties. Although CITES is legally binding on the Parties, it does not take the place of national laws. Rather it provides a framework respected by each Party, which must adopt their own domestic legislation to implement CITES at the national level. Often, domestic legislation is either non-existent (especially in Parties that have not ratified it), or with penalties with the gravity of the crime and insufficient deterrents to wildlife traders. As of 2002, 50% of Parties lacked one or more of the four major requirements for a Party: designation of Management and Scientific Authorities; laws prohibiting the trade in violation of CITES; penalties for such trade; laws providing for the confiscation of specimens.