Senior Fellow, F. A. Hayek Program for Advanced Study in Philosophy, Politics, and Economics

Board Member, Mercatus Center

Emeritus Distinguished Senior Fellow, F. A. Hayek Program for Advanced Study in Philosophy, Politics, and Economics

Distinguished Senior Fellow, F. A. Hayek Program for Advanced Study in Philosophy, Politics and Economics

Distinguished Senior Fellow, F. A. Hayek Program for Advanced Study in Philosophy, Politics and Economics

George Mason University Foundation Professor of Law, Antonin Scalia Law School, George Mason University