Eduardo Alemán is an Associate Professor in the Department of Political Science at the University of Houston. He specializes in the comparative analysis of political institutions and Latin American politics. His research focuses on executive-legislative relations, legislative politics, and political parties. He has published articles in such journals as World Politics, Comparative Politics, Comparative Political Studies, Legislative Studies Quarterly, and Latin American Research Review. George Tsebelis is Anatol Rapoport Collegiate Professor of Political Science at the University of Michigan. He is a comparativist who specializes in political institutions. His works covers Western European countries and the European Union. His more recent work studies political institutions in Latin America and Eastern Europe. He is the author of four books: Nested Games (University of California Press, 1991), Bicameralism (coauthored with Jeanette Money, Cambridge University Press, 1997), Veto Players (Princeton University Press, 2002), and Reforming the European Union: Realizing the Impossible (coauthored with Daniel Finke, Thomas Koenig, and Sven Oliver Proksch, Princeton University Press, 2012). His work has appeared in numerous academic journals and has been reprinted and translated in several languages.