The concept of the policy subsystem is an essential building block for several of the basic frameworks of policy process studies. Over time issues have become more complex, crossing subsystem boundaries, and so subsystems have escalated in their complexity as well. It is increasingly insufficient to study just one policy subsystem and so scholars have turned to studying boundary‐spanning regimes or policy networks. In this essay, we review the major contributions to developing the concept of a policy subsystem and trace its evolution into broader conceptualizations like issue and policy networks. We argue that the future for theories of the policy process is in more explicit integration of complexity theory and more effective modeling of subsystems with the utilization of social network analysis. In closing, we discuss the enduring nature of the concept of policy subsystems and highlight studies that continue using it in innovative ways.

Bounded rationality conceives of people engaging in politics as goal oriented but endowed with cognitive and emotional architectures that limit their abilities to pursue those goals rationally. Political institutions provide the critical link between micro- and macro-processes in political decision-making. They act to (a) compensate for those bounds on rationality; (b) make possible cooperative arrangements not possible under the assumptions of full or comprehensive rationality; and (c) fall prey to the same cognitive and emotional limits or canals that individual humans do. The cognitive limitations that hamper individuals are not only replicated at the organizational level but are in fact causal.

This article examines the relationship between demand for expert information from members of the US Congress and increased issue salience in the public. As problems become salient, policymakers should seek out expert information to define problems and identify effective policy solutions to address those problems. Previous work on elite mass public representation and government problem solving has relied on public actions by elected officials to evaluate this relationship. We rely instead on new data on the policy content of privately requested reports from the Congressional Research Service (CRS) from 1997 to 2017. We find strong evidence that members consult experts when issues become salient, even when controlling for legislative agendas.

To what extent do political parties have an effect on the policy-related activity of interest groups? Drawing from ideas of conflict expansion and the structure of extended party networks, we argue that political parties are able to pull interest groups into more policy conflicts than they otherwise would be involved in. We posit that parties are able to draw interest groups to be active outside of established issue niches. We suggest that several mechanisms—shared partisan electoral incentives, reciprocity, identification with the means, and cue-taking behavior—lead groups to participate in more diverse political conflicts. By linking data on interest group bill positions and the policy content of legislation, we generate a novel measure of 158 interest groups’ alignment with political parties. We find that the more an interest group is ideologically aligned with a political party, the more diverse their issue agenda becomes.

Members of Congress take more than 2,000 trips sponsored by private organizations and interest groups every congress. Using a new data set of gift travel from 2007 to 2019 and interviews with former members of Congress, current and former congressional staffers, and staffers from interest groups that fund trips, we attempt to answer two core questions about this increasingly frequent behavior. Why do members take privately sponsored trips and what types of groups are driving this behavior? We argue that members of Congress take trips because they believe it makes them more effective legislators by exposing them to real-world consequences of their policy decisions and forcing them to build relationships with their fellow members. Trip sponsors, alternatively, seek to persuade and build relationships with members of Congress that ultimately shape their legislative coalitions. We find that trip-taking is associated with greater legislative effectiveness, in particular for Democrats, and that the provision of policy-specific information is a valuable benefit from taking these trips.