He received his PhD in Political Science from Columbia University in 2004, and prior to coming to Washington University he held a postdoctoral fellowship in the Department of Clinical Bioethics at the National Institutes of Health. From 2008-2009 he was Laurance S. Rockefeller Visiting Fellow, University Center for Human Values at Princeton University. His primary research concerns the role of freedom and domination in developing theories of justice, equality, and the rule of law. Among the core political theory faculty, he teaches courses in normative political theory and the history of political thought.