This book examines the nexus between City Networks, multilevel governance and migration policy. Examining several City Networks operating in the European Union and the United States of America’s multilevel political settings, it brings migration research into conversation with both policy studies and political science. One of the first comparative studies of City Networks and migration, the book argues that multilevel governance is the result of a contingent process of converging interests and views between leaders in network organisations and national governments, the latter continuing to play a key gatekeeping role on this topical issue even in the supranational EU system.