The President’s Czars: Undermining Congress and the Constitution. Lawrence, KS: University Press of Kansas, 2012 (with Mitchel A. Sollenberger).
Interest Groups in American Campaigns: The New Face of Electioneering. New York: Oxford University Press, 2012 (revised and updated 3rd edition) (with Clyde Wilcox and Michael Franz).
Executive Privilege: Presidential Power, Secrecy, and Accountability. Lawrence, KS: University Press of Kansas, 2010 (revised and updated 3rd edition).
Power and Prudence: The Presidency of George H.W. Bush. College Station, TX: Texas A&M University Press, 2004 (with Ryan Barilleaux).