North American Regionalism problematizes “North America” as an important region in its own right, breaking with the area-studies convention that divides the Global North and Global South portions of the Western Hemisphere at the US-Mexican border. By cutting across this division, the theoretically sophisticated essays in this volume yield new insights about politics, society, and the economy of North America, opening dialogues with the New Regionalism approach and the literature on comparative regional studies. Drawing on a six-year interdisciplinary collaboration among leading scholars from Canadian, Mexican, US, and European universities, the book brings North America back into International Relations’ study of regions and regionalism. The book includes robust theoretical and empirical engagement with issues of trade, migration, security, energy and climate, and the rise of China.