Jerry is a Part I Law and Science student at the University of Auckland, majoring in logic and computation in his science conjoint. Jerry is interested in the intersection between law and artificial intelligence, and hopes to work in that field. Outside his studies he enjoys kayaking and skiing, and a good catch-up with his mates.
I Introduction
The interaction between international and domestic law in Aotearoa New Zealand is an important topic of discussion, as the country is part of the international community. In this essay, I agree with the statement, but also note that international law is only a very limited part of the domestic law of Aotearoa. Part II of the essay will demonstrate the limited extent of international law’s integration in domestic law by examining its application in domestic courts. Part III will argue that this is appropriate by outlining the benefits and concerns of integrating international law. Part IV concludes briefly.
II International Law as a Limited Part of Domestic Law
International law is demonstrably a limited part of New Zealand’s domestic law, despite its appearing implausible through how the terms are normally defined. Domestic law is the law that covers the jurisdiction of New Zealand.1 International law is the “rules” that govern the relationship between states.2 It is, therefore, seemingly natural to conclude that international law is not and cannot be a part of domestic law without becoming domestic law itself. As Morris writes: “International law is separate from domestic law.”3
Though this presumption of separation generally remains true, international law has influenced domestic courts and thus become a limited part of domestic law in some cases.4 This includes the development of a “presumption of consistency”, meaning that the court will generally read and apply domestic statutory provisions in a manner that is consistent with New Zealand’s international obligations.5 The courts have also used international law as an interpretative aid when deciding cases.6 A notable case demonstrating both forms of influence is Attorney-General v Refugee Council of New Zealand, where international soft law instruments (non-binding statements or declarations, such as those issued by the United Nations) were used to clarify a provision of the Immigration Act 2009.7 In making its decision, the court interpreted the provision (which required immigration officers to give regard to the Convention Relating to the Status of Refugees) and the document it referred to in a manner consistent with the international soft law instruments it cited.8 Glazebrook J also specifically noted that international law can “be seen as an interpretive aid” to the court’s decision-making, similar to court decisions from other jurisdictions.9 This shows that although international law was neither binding nor applied as domestic law, it still influenced the court’s decision. It is therefore evident that, despite clear separation between international and domestic law, international law can still be a limited part of domestic law.
III Limited Integration is Appropriate
In this part, I argue that the current limited integration of international law in domestic law is appropriate. Sub-part A outlines the benefits of limited integration, and sub-part B discusses the concerns of integration and the need for balanced incorporation of international law.
A Encourages Consistency with International Obligations
Acting consistently with international law is important for New Zealand to avoid international ostracism and potential sanctions.10 Limited integration encourages New Zealand to act in this manner. The different forms of influence international law can have in New Zealand, as outlined in Part II, encourage (but do not bind) the court to make decisions more closely aligned with the country’s international obligations. A positive example of this is the Van Gorkom v Attorney-General case,11 where the Universal Declaration of Human Rights clearly influenced, but did not determine, Cooke J’s decision to invalidate a discriminatory practice regarding teachers’ pay.12 It is reasonable to conclude that decisions like this (which are aligned with international law) tend to be viewed favourably by the international community. Therefore, it is appropriate and beneficial for New Zealand that international law is a limited part of the domestic law.
B Respecting Existing Constitutional Arrangements
The extent of international law integration in New Zealand, being overall limited, is also appropriate as it respects New Zealand’s fundamental constitutional principles. The non-binding nature of international law in the current legal system means that it does not offend the foundational principle of parliamentary sovereignty – that Parliament is the supreme law-making body.13 The courts may be influenced by international law, but as discussed in Part II, it does not apply them directly in the same way as domestic law. I argue that this strikes a balance between the benefits outlined in sub-part A and concerns about a “democratic deficit”, whereby the courts can be viewed as sidelining the democratically elected Parliament through their application of international law.14 The current system of limited integration holds this balance, with Parliament still able to pass legislation that can override any decision the courts make influenced by international law (or otherwise), as Parliament’s legislation remains the highest form of law.15 This is important as Parliament ultimately answers to the people and is the foundation of New Zealand’s democracy.16 Therefore, the fact that international law is only a limited part of New Zealand’s domestic law is appropriate.
IV Conclusion
In this essay, I have generally agreed with the statement by arguing that international law is part of the domestic law of New Zealand to a highly limited extent, and that this is appropriate. First, the limited extent is demonstrated through an analysis of how international law has been applied in New Zealand’s domestic courts. Second, I argued that this is appropriate as it strikes a balance between the benefits of applying international law and concerns of a democratic deficit.
Footnotes
1 Grant Morris Law Alive: The New Zealand Legal System in Context (4th ed, Thomson Reuters, Wellington, 2019) at 5.
2 At 261.
3 At 10.
4 Jacinta Ruru, Paul Scott and Duncan Webb The Aotearoa New Zealand Legal System: Structures and Processes (7th ed, LexisNexis, Wellington, 2022) at 138, n 74.
5 Treasa Dunworth “Sources of International Law in Aotearoa New Zealand” in An Hertogan and Anna Hood (eds) International Law in Aotearoa (2021) 20 at 22.
6 See generally at 26–34.
7 At 31–32 and 31, n 82.
8 At 31–33.
9 At 33.
10 Ruru, Scott and Webb, above n 4, at 67.
11 Van Gorkom v Attorney-General [1977] 1 NZLR 535 (SC) as cited in Dunworth, above n 5, at 27.
12 Dunworth, above n 5, at 27.
13 Ruru, Scott and Webb, above n 4, at 137–138.
14 Dunworth, above n 5, at 38.
15 Ruru, Scott and Webb, above n 4, at 138.
16 See at 137–138.