Approximately one-half of Americans participate in a pension plan offered by their employers and subject to the Employee Retirement Income Security Act of 1974 (ERISA). Yet ERISA is frequently ignored by social scientists researching retirement income because of its complexity. Given the enormous amount of foregone tax revenues that support private pensions, the motivating question of my dissertation is: How did the American state change as Congress delegated power over American pension plans to private employers? I argue that a weak system of bureaucratic oversight and the federal courts' deference to pension administrators allowed fiduciaries to control policy implementation and assume a role traditionally reserved for the state - blu...