Topaic: border, security, interdependence, policy, Canada, United States, North America, states, provinces, globalization, cross-border, coordination, cooperation, collaboration, regulation, trade, regime, technology, migration, region, sector, scale, economy, maritime, intermodal, Great Lakes, Cascadia, Maritimes, Prairies, Midwest, Atlantic, Pacific, automotive, commodity, agriculture, food, bilateral, binational, multilevel governance, federalism, federation, federal system, open border, national security, terrorism, critical infrastructure, drugs, human security, public safety, homeland security, human smuggling, organized crime, food safety, cyber, sabotage, environment, British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, New Brunswick, Nova Scotia, Michigan, New York, Washington