 McCain was a strong proponent of free trade.He supported the North American Free Trade Agreement (NAFTA), the existing General Agreement on Tariffs and Trade (GATT) agreements, U.S. participation in the World Trade Organization, and opposed renegotiation of trade agreements, saying, "...the U.S. should engage in multilateral, regional and bilateral efforts to reduce barriers to trade, level the global playing field and build effective enforcement of global trading rules.