In every immigrant, there is always also an emigrant. This truth, which lies at the core of Algerian-French Abdelmalek Sayad’s sociology, inspired INTERACT, a project conducted, 2011–2015, by the Migration Policy Centre of the European University Institute. INTERACT focussed on the integration of first-generation migrants from outside the European Union (EU) and looked, too, at their numerous links with their country of origin.