Decentralized legislative oversight of bureaucratic policy making

Congressional oversight is a potentially potent tool to affect policy making and implementation by executive agencies. However, oversight of any agency is dispersed among several committees across the House and Senate. How does this decentralization affect the strategic incentives for oversight by each committee? And how do the strategic incentives of oversight committees align with the collective interest of Congress as a whole? We develop a formal, spatial model of decentralized oversight to investigate these questions. The model shows that when committees have similar interests in affecting agency policy, committees attempt to free ride on each other, and oversight levels are inefficiently low. But if committees have competing interests in affecting agency policy, they engage in “dueling oversight” with little overall effect, and oversight levels are inefficiently high. Overall, we contend that committee oversight incentives do not generally align with the collective interests of Congress, and the problem cannot be easily solved by structural changes within a single chamber.