Perhaps the greatest political question of the 21st century to date is that of immigration. As early as 2004, the Pontifical Council for the Pastoral Care of Migrants and Itinerant People pointed to the enormous scale of the phenomenon: “Today’s migration makes up the vastest movement of people of all times. In these last decades, the phenomenon, now involving about two hundred million individuals, has turned into a structural reality of contemporary society.” (Erga migrantes caritas Christi). Since then the numbers have grown substantially, and few issues have proved as politically, socially and culturally contentious.