Investigations and Public Opinion
This chapter proposes and empirically tests a general mechanism through which congressional investigative activity could affect presidential behavior and policy making more broadly: by influencing the president’s well of support among the American people. It proceeds in four parts. First, it describes two mechanisms through which committee investigations of executive misconduct are well positioned to shape levels of public support for the president. The empirical analysis then begins by asking a basic, but essential pre-cursor question: does the public generally support Congress employing its investigative powers to uncover and pursue allegations of abuse of power by the executive branch? Having answered this question in the affirmative, the analysis continues by merging the database of congressional investigative activity described in Chapter 2 with more than sixty years of public opinion data measuring support for the president. The chapter then presents the results of several original survey experiments that isolate the influence of congressional investigations on public opinion independent of potential confounding factors.