Canada was a founding member of the United Nations and has membership in the World Trade Organization, the G20 and the Organisation for Economic Co-operation and Development (OECD). Canada is also a member of various other international and regional organizations and forums for economic and cultural affairs. Canada acceded to the International Covenant on Civil and Political Rights in 1976. Canada joined the Organization of American States (OAS) in 1990 and hosted the OAS General Assembly in 2000 and the 3rd Summit of the Americas in 2001. Canada seeks to expand its ties to Pacific Rim economies through membership in the Asia-Pacific Economic Cooperation forum (APEC).