The Japanese Diet and the U.S. Congress have in common many of the characteristics of democratic institutions, similarities that can be seen in the way the two legislative bodies are constituted, in what they do, and in how they do it. At the same time, there are disparities that stem from each nation's unique cultural background and political experiences. Both the similarities and the differences are treated in this unique study. The authors, well-known japanese and U.S. scholars, illuminate significant factors that not only underlie the differing roles of the Diet and the Congress in the two governments and the style of each government, but also help shape the nature of the interaction between japan and the U.S.