She works at the intersection of democratic theory and the history of political thought, and she is interested in questions about popular sovereignty and borders. She has written about populism, the boundaries of the demos, immigration and the right to exclude, the relation between democracy and territorial rights, the moral relevance of borders and border control. She is also interested in Latin American Political Thought. // Before joining the faculty at Haverford College, she was an Assistant Professor at Yale University, and a Laurance S. Rockefeller Visiting Fellow at the University Center for Human Values, Princeton University. She has been visiting professor at CIDE in Mexico City, and a Carey Postdoctoral Fellow at the Erasmus Institute in the University of Notre Dame.