This book, by two of the world's leading administrative law scholars, reimagines administrative law as the law of public administration by making its competence the focus of administrative law. Grounded in extensive interdisciplinary, historical, and doctrinal analysis, Fisher and Shapiro show why understanding both the capacity and authority of expert public administration is crucial to ensure the legitimacy and accountability of the administrative state. To address the current precarious state of administrative law, they support a new study of the administrative process by an Attorney Generals Committee on Administrative Procedure leading to a revised Administrative Procedure Act (APA). This book is a must-read for anyone interested in administrative law and its reform.