Standard questions in the theory of administrative law involve the allocation of power among legislatures, courts, the President, and various types of agencies. These questions are often heavily informed by normative commitments to particular allocations of governmental authority among the three branches of the national government. These discussions, however, are incomplete because agencies are typically treated as unitary entities. In this essay, we examine a different question: How does administrative law allocate power within agencies? Although scholars have sometimes cracked open the black box of agencies to peer inside, their insights are localized and confined to particular contexts. We will generalize the idea, attempting to show tha...