James T. Sparrow is an associate professor of history at the University of Chicago, where he is also the master of the social sciences collegiate division. His research and teaching focus on political history with special emphasis on citizenship, national government, and the problem of the democratic state; war and society; the domestic politics of international relations; and the history of social science and political theory. Sparrow is the author of Warfare State: World War II Americans and the Age of Big Government (2011), which received an honorable mention for the OAH Frederick Jackson Turner Award. He is also a coeditor of Boundaries of the State in U.S. History (2015). He is currently completing "New Leviathan: The Problem of Legitimacy in the American Century," an intellectual and political history of extraterritorial sovereignty from Pearl Harbor to the Cuban missile crisis. In 2014–2015 Sparrow was a visiting professor at the Centre d’études nord-américaines in the École des hautes études en sciences sociales in Paris.