In The Fourth Branch: Reconstructing the Administrative State for the Commercial Republic Brian J. Cook confronts head-on the accumulating derangements in the American constitutional system and how the administrative state has contributed to the problems, how it has been a key force in addressing the troubles, and how it can be reformed to serve the system better. Cook calls for a decisive, pattern-breaking response in the form of a constitutional redesign to accommodate a fourth branch, an administrative branch. Far more than that, however, the addition of a fourth branch could enhance American constitutionalism by making the separation of powers work better, increasing the likelihood that deliberative lawmaking will occur, strengthening civic capacity and public engagement in governance, and improving both accountability and coordination in the administrative state.

By stressing that the administrative state in its current form is both biased toward business and seriously undermined by subordination to the three constitutional branches, Cook contends that neither abandoning the administrative state nor more deeply constitutionalizing or democratizing it within the existing constitutional structure is sufficient to fully legitimate and capitalize on administrative power to serve the public interest.