Presidential Impeachment and Institutional Dynamics in the Iran-Contra Affair and the Clinton-Lewinsky Scandal

This paper analyzes institutional dynamics affecting Congress's impeachment decisions regarding the Iran-Contra Affair and the Clinton-Lewinsky scandal. While other scholars have explained the Clinton impeachment by pointing to differences in the nature of the scandals–a decoupling of public opinion from legislative action, increasing partisanship, and a new media regime–these explanations overlook the nature of impeachment as an institutional confrontation, governed by institutional choices and dynamics. Taking an institutional approach, we argue that congressional decisions were strongly affected by the institutional arrangements adopted by Congress to handle the scandals' investigations. In brief, the earlier strategic approaches of party leaders and the congressional investigatory approach restrained inclinations to impeach President Reagan, while later ones promoted President Clinton's impeachment. More broadly, this analysis demonstrates the important interaction between institutional choices and party leaders' powers and strategies in affecting congressional action.