Answer:
The following is a list of international organizations in which the United States of America officially participates.[1]
Asian Development Bank (ADB) (nonregional member)
Asia-Pacific Economic Cooperation (APEC)
Association of Southeast Asian Nations (ASEAN) (dialogue partner)
Australia Group
Australia-New Zealand-United States Security Treaty (ANZUS)
Bank for International Settlements (BIS)
Black Sea Economic Cooperation Zone (BSEC) (observer)
Colombo Plan (CP)
Council of Europe (CE) (observer)
Council of the Baltic Sea States (CBSS) (observer)
Dominican Republic–Central America Free Trade Agreement (CAFTA-DR)
Euro-Atlantic Partnership Council (EAPC)
European Bank for Reconstruction and Development (EBRD)
European Organization for Nuclear Research (CERN) (observer)
Fédération Internationale de Football Association (FIFA)
Food and Agriculture Organization (FAO)
Group of Seven (G7)
Group of Ten (G10)
Group of Twenty Finance Ministers and Central Bank Governors (G20)
Inter-American Development Bank (IADB)
International Atomic Energy Agency (IAEA)
International Bank for Reconstruction and Development (IBRD)
International Centre for Settlement of Investment Disputes (ICSID)
International Chamber of Commerce (ICC)
International Civil Aviation Organization (ICAO)
International Criminal Police Organization (Interpol)
International Development Association (IDA)
International Energy Agency (IEA)
International Federation of Red Cross and Red Crescent Societies (IFRCS)
International Finance Corporation (IFC)
International Fund for Agricultural Development (IFAD)
International Grains Council (IGC)
International Hydrographic Organization (IHO)
International Labour Organization (ILO)
International Maritime Organization (IMO)
International Mobile Satellite Organization (IMSO)
International Monetary Fund (IMF)
International Olympic Committee (IOC)
International Organization for Migration (IOM)
International Organization for Standardization (ISO)
International Red Cross and Red Crescent Movement (ICRM)
International Telecommunication Union (ITU)
International Telecommunications Satellite Organization (ITSO)
International Trade Union Confederation (ITUC)
Multilateral Investment Guarantee Agency (MIGA)
North American Free Trade Agreement (NAFTA)
North Atlantic Treaty Organization (NATO)
Nuclear Energy Agency (NEA)
Nuclear Suppliers Group (NSG)
Organisation for Economic Co-operation and Development (OECD)
Organization for Security and Cooperation in Europe (OSCE)
Organisation for the Prohibition of Chemical Weapons (OPCW)
Organization of American States (OAS)
Pacific Community (SPC)
Pacific Islands Forum (PIF) (partner)
Paris Club
Permanent Court of Arbitration (PCA)
Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO Preparatory Commission)
South Asian Association for Regional Cooperation (SAARC) (observer)
Southeast European Cooperative Initiative (SECI) (observer)
United Nations (UN)
United Nations Conference on Trade and Development (UNCTAD)
United Nations High Commissioner for Refugees (UNHCR)
United Nations Institute for Training and Research (UNITAR)
United Nations Mission for Justice Support in Haiti (MINUJUSTH)
United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA)
United Nations Security Council (UNSC) (permanent member)
United Nations Truce Supervision Organization (UNTSO)
Universal Postal Union (UPU)
World Bank Group (WBG)
World Customs Organization (WCO)
World Health Organization (WHO)
World Intellectual Property Organization (WIPO)
World Meteorological Organization (WMO)
World Organization of the Scout Movement (WOSM)
World Trade Organization (WTO)
World Veterans Federation (WVF)
Zangger Committee (ZC)
Explanation:
This may not be the answer but it should help...