Mark J. Rozell, Dean and Professor, Schar School of Policy and Government, George Mason University. Professor Rozell is the author of nine books and editor of twenty books on various topics in US government and politics including the presidency, religion and politics, media and politics, and interest groups in elections. His books include The President’s Czars: Undermining Congress and the Constitution (University Press of Kansas, 2012) (with Mitchel A. Sollenberger) and Executive Privilege: Presidential Power, Secrecy and Accountability (University Press of Kansas, 2010). He has testified before Congress on several occasions on executive privilege issues and has lectured extensively in the US and abroad. In recent years, he has lectured in China, India, Vietnam, Turkey, Austria, Germany, Great Britain, Italy, Poland, Denmark, Finland, and Sweden.