GEORGE KATROUGALOS is an Associate Professor at the University of Thrace, Greece, a constitutional lawyer and Research Fellow and Member of the Board of the Centre of European Constitutional Law. His main areas of specialization are social policy and social rights, comparative constitutional law, institutional building and human rights. - GABRIELLA LAZARIDIS is Lecturer in European and Gender Studies at the Department of Geography, University of Dundee. She has been elected member of the European Sociological Association's executive and has extensively published in the fields of migration in Europe and the implementation of European policies in Southern Europe.