Does the Tasmanian Parliament have the power to pass a law permitting same-sex marriage? The short answer is ‘Yes’. But the more difficult question is whether that law will be effective or whether it will be inoperative because it is inconsistent with a Commonwealth law. The answer to this question is unclear and unknowable until the High Court decides.
The answer will depend upon two decisions which ultimately the High Court would have to make, assuming that the constitutional validity of the Tasmanian law would be challenged. The first is whether the Commonwealth Parliament’s constitutional power in s 51(xxi) to make laws with respect to ‘marriage’ extends to the marriage of same-sex couples. If the answer is ‘No’, then there would be no issue of a conflict between State and Commonwealth laws and a State Parliament, exercising its plenary legislative powers, could enact laws concerning same-sex marriage (although there may be an argument about whether the term ‘marriage’ ought to be used in such circumstances). If the answer is ‘Yes’, then the High Court would have to decide whether there was an inconsistency between any State law on marriage and the Commonwealth’s marriage law. If there was an inconsistency, then the Commonwealth law would prevail and the State law would be inoperative to the extent of the inconsistency.
The meaning of ‘marriage’ in the Commonwealth Constitution
Whether the Commonwealth Parliament has the power to legislate with respect to the marriage of same-sex couples will depend upon the approach to constitutional interpretation taken by the Court. If an originalist approach is taken, the Court will consider the contemporary meaning of the term ‘marriage’ at the time the Constitution was enacted in 1900. In doing so, it would take into account the common law, the statutes and the practice of the late nineteenth century. In 1866 Lord Penzance, in Hyde v Hyde, defined marriage as being ‘the voluntary union for life of one man and one woman, to the exclusion of all others’. This definition is likely to be regarded as representing the meaning of the term ‘marriage’ at the time the Constitution was enacted. It has been adopted by Australian courts from time to time in interpreting the meaning of ‘marriage’ in the Constitution. For example, Justice Brennan applied it in The Queen v L (1991) 174 CLR 379, 391-2.
The constitutional definition of ‘marriage’ cannot be expanded by the Parliament. As Justices Mason and Deane noted in Re F; ex parte F (1986) 161 CLR 376, at 389:
Obviously, the Parliament cannot extend the ambit of its own legislative powers by purporting to give to “Marriage” an even wider meaning than that which the word bears in its constitutional context.
However, the High Court can expand its meaning by way of constitutional interpretation if it is to take a non-originalist approach. It could look to the meaning of ‘marriage’ today, taking into account ‘contemporary understandings of its meaning’ including changes in the meaning of language and the different social circumstances in which the language applies. Justice McHugh explained these two contrasting approaches in Re Wakim; Ex parte McNally (1999) 198 CLR 511, where he said at 553:
[I]n 1901 “marriage” was seen as meaning a voluntary union for life between one man and one woman to the exclusion of all others. If that level of abstraction were now accepted, it would deny the Parliament of the Commonwealth the power to legislate for same sex marriages, although arguably “marriage” now means, or in the near future may mean, a voluntary union for life between two people to the exclusion of others.
The difficulty, however, if one takes a non-originalist approach, is identifying at what point the contemporary meaning of a term has changed and what level and evidence of community support is needed to justify a change in constitutional meaning. Given the current highly contested political debate on the meaning of ‘marriage’ this would be a difficult decision for the High Court to make.
Inconsistency of laws on marriage
If the High Court decided that the Commonwealth Parliament does have the power to legislate about same-sex marriages under s 51(xxi) of the Constitution, then a question would arise as to whether any Tasmanian law on the subject would be inconsistent with a valid Commonwealth law on the subject. The Marriage Act 1961 (Cth) provides in s 5 that ‘”marriage” means the union of a man and a woman to the exclusion of all others, voluntarily entered into for life.’ It picks up Lord Penzance’s definition from 1866 and would safely fall within an originalist interpretation of s 51(xxi) of the Constitution. The Marriage Act then sets out the requirements for all marriages solemnised in Australia and sets out the pre-conditions for marriage and the circumstances in which marriages are invalid.
The question would be whether the proposed Tasmanian law would be inconsistent with the Marriage Act. This would depend upon the wording of the Tasmanian law. If the Tasmanian law purported to give to same-sex couples the legal status of being ‘married’ for the purposes of all law across Australia, including Commonwealth law, this would give rise to a direct inconsistency with the Marriage Act, as it would be purporting to grant people a status which is denied to them by a Commonwealth law. It would therefore be inoperative to the extent of this inconsistency.
In any case, it would be beyond the legislative powers of the Tasmanian Parliament to purport to confer on persons the status of ‘married’ for the purposes of laws in other States or the Commonwealth. Hence, a Tasmanian same-sex marriage, even if made under a valid and operative Tasmanian law, would not give the same-sex couple any of the legal rights of a ‘married’ couple under Commonwealth law or under the law of any other State (unless the States or Commonwealth legislated to recognize the status of same-sex couples married in Tasmania or the courts interpreted existing laws widely enough to pick up a married status under Tasmanian laws). Same-sex couples married in Tasmania would most likely not, in effect, be legally ‘married’ for any purposes other than Tasmanian laws. This might dampen the anticipated tourist trade in same-sex weddings, if such a ‘marriage’ would not change the couple’s marital status on mainland Australia.
Even if the Tasmanian law was drafted so as to confine its effects to Tasmanian laws, it might still be held to be inconsistent with the Commonwealth’s Marriage Act to the extent that the Commonwealth law was regarded as ‘covering the field’ of marriage. Although the Marriage Act confines its definition of marriage to opposite sex couples, it is likely to be argued that it was intended to cover the entire field of marriage within Australia and to prohibit marriage of same-sex couples, just as it prohibits certain other marriages, including marriages between certain family members. Section 48 states that marriages solemnised in Australia otherwise than as stipulated by the provisions of the relevant division are not valid. Section 88EA also says that a union solemnised in a foreign country between a man and another man or a woman and another woman must not be recognized as a marriage in Australia. These provisions suggest an intention to cover the field. While s 6 of the Marriage Act states that the Act shall not be taken to exclude the application of State laws in so far as they relate to the ‘registration’ of ‘marriages’, this is only directed to registration – not the solemnisation of marriages and it is also confined to ‘marriages’ as defined by the Act.
Conclusion
A Tasmanian law permitting same-sex marriage, even if operative, would do little more than facilitate the holding of a ceremony, the consumption of champagne and the taking of photos. It might confer on the parties to a same-sex marriage the status of ‘married’ for the purposes of Tasmanian legislation, but it is most unlikely that they would be regarded as legally ‘married’ for the purposes of Commonwealth law or under the law of any other State and would therefore not attract any legal benefits or status accorded to a married couple.
In addition, there is a distinct possibility that such a law would be held to be inoperative because it is inconsistent with a valid Commonwealth law. It is therefore not yet time for same-sex marriage proponents to crack open the champagne.