Moloney & Anor v New Zealand

The applicants, Moloney and another, sought to challenge the validity of certain provisions of the *New Zealand Customs and Excise Act 1996* (NZ) and related regulations. The dispute concerned the application of these New Zealand laws to goods imported into Australia, and the applicants contended that these provisions were invalid and of no effect in Australia. The matter came before the High Court of Australia.

The central legal issue before the High Court was whether the New Zealand legislation, by its purported extraterritorial operation, could validly impose obligations or confer powers in relation to conduct occurring within Australia. Specifically, the court had to determine if the New Zealand Parliament had the legislative authority to regulate the importation of goods into Australia, and if such an attempt to legislate extraterritorially was constitutionally permissible under Australian law.

Gleeson CJ, in his judgment, considered the fundamental principle of territoriality in international and domestic law, which dictates that a sovereign state's legislative power is generally confined to its own territory. His Honour reasoned that the New Zealand Act, in seeking to regulate conduct within Australia, exceeded the territorial limits of New Zealand's legislative competence. The court applied the principle that legislation of one sovereign state cannot operate extraterritorially to bind or affect the rights and obligations of individuals within the territory of another sovereign state, absent specific international agreements or recognised exceptions. The High Court found the impugned provisions of the New Zealand Act to be invalid and of no effect in Australia.