Examining the normative foundations of US antitrust and EU competition law, Elias Deutscher argues that the idea of a competition-democracy nexus rests on a commitment to a republican understanding of economic liberty. The book uses this republican concept of economic liberty to analyse how US antitrust and EU competition law embodied a competition-democracy nexus and explains how the turn of competition law toward a more economic approach has led to its decline. The book offers proposals for how the nexus can be revived to allow competition law to address contemporary concerns about the concentration of corporate power. This book explores how competition and its protection through competition law are linked with democracy. Dr. Elias Deutscher is an Associate Professor in Competition Law and a member of the Centre for Competition Policy at the University of East Anglia. As a trained lawyer and political scientist, he publishes widely on the normative, conceptual and historical foundations of competition law, and new challenges for competition policy in digital and innovation-driven markets.