"The North American monetary union is a theoretical economic and monetary union of three North American countries: Canada, the United States of America and Mexico.
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). The hypothetical currency for the union is most often referred to as the amero.[1][2] The concept is modeled on the common European Union currency (the euro)."
https://en.wikipedia.org/wiki/North_American_monetary_union
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). The hypothetical currency for the union is most often referred to as the amero.[1][2] The concept is modeled on the common European Union currency (the euro)."
https://en.wikipedia.org/wiki/North_American_monetary_union