Council on Foreign Relations (CFR) let the cat out of the bag about what's really behind our trade agreements and security partnerships with the other North American countries. A CFR document spells out a five-year plan for the "establishment by 2010 of a North American economic and security community" with a common "outer security perimeter." This document, called "Building a North American Community," asserts that George W. Bush, Mexican President Vicente Fox, and Canadian Prime Minister Paul Martin "committed their governments" to this goal when they met at Bush's ranch and at Waco, Texas on March 23, 2005. The three adopted the "Security and Prosperity Partnership of North America" and assigned "working groups" to fill in the details. It was at this same meeting, grandly called the North American summit, that President Bush pinned the epithet "vigilantes" on the Minutemen volunteers guarding our borders.
The United States of North America?
I'm not sure what it is you want confirmed. The Council on Foreign Relations exists as does the Security and Prosperity Partnership of North America. You can get more information from Google as well as info about CFR's document "Building a North American Community."