An essential question for American public administration scholarship is to what degree does (and should) our constitutional heritage influence our approach to administering the public sphere, and has this changed over time. Much scholarship addresses these questions from a normative theoretical perspective. This study investigates whether the normative claim made by the constitutionalist scholars, that the U.S. Constitution should guide public administrative practice, is actually born out of the practice. A longitudinal content analysis of Office of Management and Budget Circular A-76 from 1966 to 2003 provides evidence that the Constitutionalist Public Administration Paradigm is the predominant public administration paradigm in all the Circulars.