North American integration and the single currency?

The objective of this paper is two-fold. First, through the use of two indices that correct for the bias introduced by the relative size of the U.S. economy, it describes the degree of regional dependence reached in the NAFTA area as compared to Europe. Second, it asks whether the stage is set for the successful adoption of a single currency, namely the dollar within the area. In an attempt to answer this question, the paper identifies the one critical asymmetry that should be addressed before considering the complete monetary integration of the area.