The Canada/U.S. border has not shifted physically in many years but psychologically the border is in a very different place today than before 9/11. While the various agreements of the late 1900s seemed to indicate that the border was becoming an informal formality, the events of 9/11 resulted in a significant increase in wait times as security protocols were tightened. This review article considers recent scholarship on border mobility, waiting, and their implications moving forward.