In most Member States, the operational aspects of the return of third-country nationals illegally present in the Member States fall within the competence of the authorities responsible for controlling the external borders.
Sa chuid is mó de na Ballstáit, tagann na gnéithe oibríochtúla, a bhaineann le náisiúnaigh tríú tíortha atá i láthair sna Ballstáit go neamhdhleathach a chur ar ais, faoi inniúlacht na n-údarás atá freagrach as na teorainneacha seachtracha a rialú.