In regard to international law, Ó Caoindealbháin states that, although it is the attempt to confer citizenship extra-territorially without the agreement of the state affected that represents a breach of international law (not the actual extension), the 1956 Act "co-exists uneasily with the terms of the Agreement, and, by extension, the official acceptance by the Irish state of the current border. While the Agreement recognises that Irish citizenship is the birthright of those born in Northern Ireland, it makes clear that its acceptance is a matter of individual choice. In contrast, the 1956 Act continues to extend citizenship automatically in the majority of cases, thereby, in legal effect, conflicting with the agreed status of the border and the principle of consent".