Samenvatting

In order to establish and evaluate the significance of changing socio-legal boundaries and how these are mirrored in citizenship, cross-border formations of the social and citizenship rules must be discussed. The first part of this paper deals with changes in social boundaries across state borders and presents three generations of transnational studies. Based on this, the second part asks how legal boundaries have changed in the case of dual citizenship and supranational social citizenship. Citizenship is a particularly important issue because it sits at the intersection of social and legal boundaries. There is a growing tolerance toward dual citizenship and the evolution of supranational citizenship, one in which migrants enjoy a transnational life that is supported by the implementation of human rights principles in national constitutions, legislation and in European Union court rulings.