Article 21(1) of the Treaty on the Functioning of the European Union (TFEU) stipulates that every citizen of the Union shall have the right to move and reside freely within the territory of the Member States, subject to the limitations and conditions laid down in the Treaties and by the measures adopted to give them effect.
Sonraítear in Airteagal 21(1) den Chonradh ar Fheidhmiú an Aontais Eorpaigh (CFAE) go mbeidh an ceart ag gach saoránach den Aontas gluaiseacht agus cónaí faoi shaoirse ar chríoch na mBallstát, faoi réir na dteorainneacha agus na gcoinníollacha dá bhforáiltear sna Conarthaí agus sna forálacha arna nglacadh lena gcur chun feidhme.