THOMAS FAIST is Professor of Transnational Relations and Development Studies at the Faculty of Sociology, Bielefeld University, Germany. His research interests focus on transnational spaces, migration and post-migration processes, citizenship, social and development policy. ANDREAS ETTE is a Research Associate at the Federal Institute for Population Research, Germany and a PhD Candidate at Bielefeld University. He was previously a Research Fellow of the Collaborative Research Centre 'Transformations of the State' at the University of Bremen, Germany.