OAS Organization of American States
A political forum that is based in Washington and involves the heads of state of all 34 countries in the Americas, with the exception of Cuba which has no voting rights. Its main priority is free trade and on its agenda right now is the proposed FTAA. As the extension of NAFTA, the FTAA aims to consolidate the entire Western Hemisphere into one free trade zone through "economic unification".

OECD Organization for Economic Cooperation and Development
intergovernmental organization with 29 member countries. More than simply a regional body, the OECD defines itself as "a homogeneous entity" within which member countries share similar economic and political ideologies. Members include all EU states plus Switzerland, Norway, Iceland, the Czech Republic, Hungary, Poland, Turkey, Australia, the United States, Canada, Japan, South Korea, Mexico and New Zealand

http://www.oecd.org/