UN Economic Commission for Europe, which includes North America. The ECE held a regional PrepCom as part of the WSSD process

United Nations Economic Commission for Europe: Mission: “To strive to foster sustainable economic growth among its 55 member countries. To that end UNECE provides a forum for communication among States; brokers international legal instruments addressing trade, transport and the environment; and supplies statistics and economic and environmental analysis".

United Nations Economic Commission for Europe (URL: http://www.unece.org/)