North American monetary union

The North American monetary union is a theoretical economic and monetary union of three North American countries: Canada, Mexico, and the United States. Implementation would involve the three countries giving up their current currency units (the U.S. dollar, the Canadian dollar, and the Mexican peso) and adopting a new one, created specifically for this purpose (some versions of the theory assume only the United States and Canada would be included).

Source: Wikipedia — North American monetary union (CC BY-SA 4.0)