From this:

As a prelude to a visit to Canada by U.S. President George W. Bush later this year, Secretary of State Condoleezza Rice will visit Ottawa this month for meetings with Foreign Affairs Minister Peter MacKay.

Rice and U.S. Homeland Security Secretary Michael Chertoff will be joined in Ottawa on Feb. 23 by their Mexican counterparts, for a day of talks with MacKay and Public Safety Minister Stockwell Day.

The meeting will be the latest installment of the three-way North American security and prosperity partnership and will set the table for a follow-up to last year's Three Amigos Summit in Cancun, Mexico, which will be held later this year [no date set yet], somewhere in Canada.

...Critics in Canada and the U.S. say the partnership could compromise the sovereignty of both countries, and that the accord is a part of a covert way to create a common currency for North America. But the U.S. State Department has said that it is not interested in creating a North American Union, akin to the European Union, or encouraging its neighbours to adopt the U.S. dollar.

By the time that most people have realized that the State Department was lying it will probably be too late.