Applicant countries have to accept the ‘acquis’ before they can join the EU, and make EU law part of their own national legislation.
Caithdh na tíortha iarrthacha glacadh leis an ‘acquis’ sula bhéadfaidh siad teacht isteach san AE, agus caithdh siad dlí an AE a bheith mar chuid dá reachtaíocht náisiúnta.