The United States closed its borders with Canada and Mexico to all but “essential” traffic more than a month ago, on April 7, the day our book “North American Borders in Comparative Perspective” (University of Arizona Press 2020) was published. The deadly COVID-19 pandemic was making its way across North America, tightening borders between countries, states, provinces, communities, friends and neighbors.
Like the birds, the coronavirus, knows no boundaries. It stealthily crosses political and geographic boundaries at will to infect hundreds of thousands, leaving devastating casualty numbers in its wake.
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