The Metwally Principle
27 Metwally concerned the validity of s 6A of the RD Act. That section had been enacted in 1983 following the decision of the High Court in Viskauskas v Niland (1983) 153 CLR 280 that provisions in Pt II of the Anti-Discrimination Act 1977 (NSW) were inconsistent with the RD Act and, to that extent, invalid. By the amendment, the Parliament sought to preserve the operation of State and Territory legislation which was directed to achieving the same objects as the RD Act. It did so by providing that the RD Act "is not intended, and shall be deemed never to have been intended, to exclude or limit the operation of a law of a State or Territory" furthering the objects of the International Convention on the Elimination of All Forms of Racial Discrimination and which was capable of operating concurrently with the RD Act (subs (1)); by providing that persons who, whether before or after the commencement of the 1983 Amendment, instituted proceedings concerning allegations of racial discrimination under a State or Territory Act were then precluded from pursuing such an action under the RD Act (subs (2)) and by permitting a prosecution of a person under either the RD Act or a State or Territory Act (subs (3)).
28 By a majority (Gibbs CJ, Murphy, Brennan and Deane JJ), the High Court in Metwally held that s 6A was invalid. The reasoning of the majority was similar. Gibbs CJ, at 457-8:
[T]he Parliament cannot exclude the operation of s. 109 by providing that the intention of the Parliament shall be deemed to have been different from what it actually was and that what was in truth an inconsistency shall be deemed to have not existed. … If there is an inconsistency between a law of a State and a law of the Commonwealth there is no other rule than that laid down by s. 109 by which the inconsistency may be resolved. In the present case, since an inconsistency in fact existed, the provisions of s. 109 were called into play and their effect cannot later be excluded by retrospectively declaring that the truth was other than it was.
29 Murphy J, at 469:
If an inconsistency occurs because of prospective or retrospective operation of federal or State law, s. 109 operates to render the State law invalid to the extent of the inconsistency. But retrospective operation of federal law cannot render valid what s. 109 made invalid. This would elevate legislation above the Constitution.
30 Brennan J, at 474:
[A] retrospective amendment of the Commonwealth law does [not] affect the past operation of s. 109 upon the State law. The period during which the State law was inconsistent with the Commonwealth law is a matter of history, not of legislative intention. If the retrospective amendment of the Commonwealth law were effective to satisfy retrospectively the condition governing the operation of s. 109, the operation of s. 109 would be contradictory; prior to the retrospective amendment, s. 109 would have deprived the State law of legal force and effect, yet after the amendment it would be necessary to deny that s. 109 had any operation on the State law during the same period. It is impossible to suppose that s. 109 could so operate as to attribute to a State law no legal force and effect in its application to acts, matters and things that occurred or existed prior to the amendment of the Commonwealth law and, after the amendment, to acknowledge that the State law had full force and effect in its application to the same acts, matters and things.
31 Finally, Deane J, at 478-9:
Section 109 of the Constitution is not concerned with legal fictions. It is concerned with the reality of contemporaneous inconsistency between a valid law of the Commonwealth and an otherwise valid law of a State. According to its terms, its operation is immediate. Its terms are unqualified and self-executing. If there is inconsistency between an otherwise valid law of a State and a valid law of the Commonwealth the State law shall be, to the extent of the inconsistency, invalid. It is not the Commonwealth law which operates to make the State law invalid, it is the Constitution itself … . The fact that the Commonwealth Parliament legislates retrospectively to introduce the fiction that, for the purposes of its law, its inconsistent law never existed or had a different operation to that which it in fact had cannot alter the objective fact that at the previous time when s. 109 operated that inconsistency did exist.
(Emphasis in the original)
32 Thus, Metwally stands for the proposition that it is not open to the Commonwealth Parliament to enact a law to avoid, retrospectively, the invalidity which the operation of s 109 of the Constitution has had on an inconsistent State or Territory law. In particular, the Parliament cannot declare, with retrospective effect, that its law had a different operation from that which it had when made, in order to avoid inconsistency.
33 The appellant contends that Metwally also means that State and Territory Parliaments are limited in the same way. Just as the Commonwealth Parliament cannot avoid the operation of s 109 by retrospective legislation, neither can the State and Territory Parliaments nor those Parliaments acting in concert with the Commonwealth Parliament.
34 However, at least two members of the Court in Metwally (Murphy and Deane JJ) considered that there were means by which the Commonwealth and State Parliaments, acting jointly, could overcome the effect of the past invalidity of a State law brought about by the operation of s 109. Murphy J, who considered that the Commonwealth and State Parliaments could each legislate with retrospective effect to achieve such a result, said at 469:
[A]lthough the federal Parliament itself cannot undo the previous invalidating effect of s. 109, it can clear the way for the State Parliament to make a fresh State Act to apply retrospectively in the same terms. Thus both Parliaments can legislate retrospectively so that a fresh State law would come into existence giving present legal force to the procedures which have been followed and the remedies which have been obtained by Mr Metwally.
(Emphasis added)
That is to say, a fresh law (ie, not the law which had given rise to the inconsistency) could operate retrospectively to give "present legal force" to the procedures previously followed.
35 Deane J said at 480:
[I]t should be clear that the foregoing does not involve a denial of the competence of the Parliaments of the Commonwealth and of a State, in combination, to legislate retrospectively for the purpose of remedying any unintended operation of the provisions of s. 109 of the Constitution. … If, for example, the New South Wales Parliament were now to pass legislation to the effect of the relevant provisions of the N.S.W. Act and to provide that those provisions would have retrospective operation, the question whether that new law was valid or operative would fall to be determined by reference to the time when it was in fact on the statute book as distinct from the time in which, under its provisions, it was, for the purposes of the law of the State, deemed to have been operative. That being so, the provisions of s. 109 would operate to render such a subsequent State law invalid only if, and to the extent that, there were some present inconsistency with subsisting Commonwealth law.
36 The parties also referred to a passage in the reasons of Mason J (in dissent) at 460-1, which contemplated that cooperative action between the Commonwealth and State may remove an inconsistency. Mason J said:
But there is no objection to the enactment of Commonwealth legislation whose effect is not to contradict s. 109 of the Constitution but to remove the inconsistency which attracts the operation of that section. So, where inconsistency between Commonwealth and State laws arises, … the Commonwealth Parliament may legislate to remove that inconsistency by providing that the Commonwealth law is not intended to regulate the subject-matter exhaustively or exclusively, thereby opening the way to the concurrent operation of a State law on the subject matter. It is, of course, well settled that "a Commonwealth statute may provide that it is not intended to make exhaustive or exclusive provision with respect to the subject with which it deals thereby enabling State laws, not in direct conflict with a Commonwealth law, to have an operation" …
As can be seen, Mason J did not address the question of whether inconsistency could be removed with retrospective effect. Nor did Brennan J in a brief passage at 474:
Where the condition governing s. 109 is in truth satisfied, it is not within the power of the Parliament to deem it not to be satisfied. The Parliament can remove an inconsistency, but it cannot deem an inconsistency to be removed.
37 Metwally was considered by the High Court in the Native Title Act Case. That case concerned a challenge to the validity of a number of provisions in the NT Act, including ss 11 and 19. It also concerned the validity of the Land (Titles and Traditional Usage) Act 1993 (WA) (the WA Act), which had been enacted prior to the enactment of the NT Act. It was accordingly necessary for the Court to consider the content and effect of a number of provisions in each Act.
38 Amongst other things, the WA Act, by s 5, confirmed the validity of titles granted in the period from 31 October 1975 (the day of commencement of the RD Act) to 2 December 1993 (when Pts 2 and 3 of the WA Act came into operation). Section 5(3)(b) provided that, if the effect of that confirmation had been to extinguish or impair native title, a claim for compensation could be made under s 28.
39 In relation to s 5, the plurality (Mason CJ, Brennan, Deane, Toohey, Gaudron and McHugh JJ) said at 451:
If, consistently with s 10(1) of the Racial Discrimination Act, a State law could not have authorised the extinguishment or impairment of native title because there was no corresponding authority to extinguish or impair other forms of title, a State law which purports to confirm retrospectively the validity of the act which extinguished or impaired native title cannot restore effect to the act in question. Section 5(1) is concerned to confirm the validity of grants of title made after the Racial Discrimination Act came into operation where those grants purported to extinguish or impair native title. If native title was protected then by the Racial Discrimination Act, only a law of the Commonwealth could be effective to modify the operation of the Racial Discrimination Act and then only for the future: the effect of s 109 of the Constitution cannot be retrospectively undone.
(Citation omitted and emphasis added)
This was a confirmation of the operation of the Metwally principle. It is also evident in this passage that the plurality contemplated that any Commonwealth law modifying the operation of the RD Act so as to avoid inconsistency could be effective "only for the future".
40 The plurality identified three aspects of the operation of the NT Act as being of central importance to its constitutional character, at 453: the recognition and protection of native title, the giving of full force and effect to past acts which might not otherwise have been effective to extinguish or impair native title, and the giving of full force and effect to future acts which might not otherwise be effective to extinguish or impair native title.
41 The plurality then reviewed the provisions in Pt 2 concerning the validation of certain past acts and, at 454, described the definition of "past act" as "the lynchpin for the provisions of [the NT Act] which permit State laws enacted in the future to give full force and effect to earlier acts which purported to extinguish or impair native title but which were ineffective at the time when the acts were done" (emphasis added). At 454-5, the plurality addressed the effect of s 19 of the NT Act in relation to the validation by the State of previous invalid acts:
An act which was wholly valid when it was done and which was effective then to extinguish or impair native title is unaffected by the Native Title Act. Such an act neither needs nor is given force and effect by the Act. But, as acts purported to extinguish or impair native title might be impugned as inconsistent with the Racial Discrimination Act if they were done after that Act came into operation, the Parliament has chosen to include certain legislative and executive acts of the Crown within the definition of "past acts". Section 14 then confers … validity on the past acts of the Commonwealth. Section 19(1) permits State and Territory laws enacted in the future to confer … validity on the past acts of the State or Territory. …
The provision authorising the future validation of past acts attributable to a State is not affected by the principle that a law of the Commonwealth cannot retrospectively avoid the operation of s 109 of the Constitution on a State law that was inconsistent with a law of the Commonwealth. Section 19 of the Native Title Act does not purport to deny the overriding effect of the Racial Discrimination Act upon any inconsistent law of a State in the past. Section 19 removes any invalidating inconsistency between, on the one hand, a State law enacted in the future that purports to validate past acts attributable to a State and, on the other, the Racial Discrimination Act or any other law of the Commonwealth (including the Native Title Act itself). The validation of past acts attributable to a State is effected by a State law which, at the time of its enactment, is not subject to an overriding law of the Commonwealth. The force and effect of a past act consisting of a State law which was "invalid" by force of s 109 of the Constitution because of inconsistency with the Racial Discrimination Act is recognised only from and by reason of the enactment of the future State law but, from that time onwards, the force and effect of the past act is determined by the terms of the State law enacted in conformity with s 19.
(Emphasis added)
42 Later, the plurality emphasised the importance of the State law conforming with the requirements of s 19 (at 456):
The validating legislation must be an exercise of the legislative power of the State or Territory, but a State or Territory law which does not satisfy s 19(1) will be ineffective to give force and effect to a past act which had purported to extinguish native title, for such a State or Territory law does not fulfil the criteria of an exception to the general sterilisation of past acts by s 11 of the Act. …
43 As can be seen, the plurality in the Native Title Act Case regarded s 19 as indicating that a State law which is not otherwise inconsistent with the RD Act or the NT Act may "confer" validity on past invalid acts. Such a law does not infringe the Metwally principle. When a State or Territory does enact a validating law which conforms with s 19, the force and effect of the past act is, from the time of the enactment, determined by reference to that State or Territory law.