When it accepted to pronounce on the constitutionality of non-tariff barriers to inter-provincial trade, the Supreme Court had a chance to make history. In R v Comeau, 2018 SCC 15, the Court chose to unmake it instead. Far from “freeing the beer” and invalidating legislation that prevents bringing booze from one province to another and other regulatory schemes built on provincial protectionism, Comeau countenances even restrictions on inter-provincial trade that would previously have been thought flatly unconstitutional. In the process, it tramples over constitutional text and history, as well as logic.
Section 121 of the Constitution Act, 1867 provides that “[a]ll Articles of the Growth, Produce, or Manufacture of any one of the Provinces shall, from and after the Union, be admitted free into each of the other Provinces”. But free of what exactly? Of any and all regulation, or of just some particular kinds? In Gold Seal Ltd v Alberta (Attorney-General), (1921) 62 SCR 424, the Supreme Court held that “free” meant “free from tariffs”. In Comeau, it was asked to revisit this holding. As the Court ― its members evaded responsibility for their (mis)judgment by attributing it to the institution, though I am looking forward to Peter McCormick or someone else exposing the true author(s) ― notes, this question is of the highest importance:
If to be “admitted free” is understood as a constitutional guarantee of free trade, the potential reach of s. 121 is vast. Agricultural supply management schemes, public health-driven prohibitions, environmental controls, and innumerable comparable regulatory measures that incidentally impede the passage of goods crossing provincial borders may be invalid. 
* * *
Before answering the interpretive question, however, the Supreme Court addresses a different one: whether the trial judge was entitled to depart from Gold Seal to hold that s. 121 applied to non-tariff barriers to inter-provincial trade. The judge had taken up the Supreme Court’s invitation, issued in Canada (Attorney General) v Bedford, 2013 SCC 72,  3 SCR 1101, to revisit precedent in light of newly available evidence. In Bedford and Carter v Canada (Attorney General), 2015 SCC 5,  1 SCR 331, which dealt with the constitutionality of the provisions of the Criminal Code relative to prostitution and assisted suicide respectively, the evidence that was held to allow lower courts to revisit Supreme Court precedent came mostly from the social sciences. In Comeau, the trial judge relied on new historical evidence about the context and original meaning of s. 121.
This, the Supreme Court insists, was not something that Bedford authorizes. Bedford “is not a general invitation to reconsider binding authority on the basis of any type of evidence”. [31; emphasis mine] What is required is a showing “the underlying social context that framed the original legal debate is profoundly altered”,  triggering the applicability of the Court’s “living tree” approach to the constitution. Historical evidence, which the court derides as “a description of historical information and one expert’s assessment of that information”, does not count: “a re-discovery or re-assessment of historical events is not evidence of social change”. 
In conversation with Maclean’s, Carissima Mathen said the Court “essentially chastised the trial judge for going beyond his authority, in terms of feeling free to disregard this older decision”. Were she less polite, prof. Mathen could have described the Supreme Court as delivering a benchslap to the trial judge, at once gratuitous and telling. Gratuitous, because this part of the Court’s reasons is, in my view, obiter dicta ― it is not part of the reasoning that’s necessary to the decision, which is based on the court’s own re-examination of the constitution and relevant precedent (including, as we’ll see, a departure from Gold Seal). Telling, because the disparagement of history is of a piece with the Court’s broader approach to the constitution, on which more below.
Embarking on its own analysis of s. 121, the Court repeats that a robust reading of this provision would call into question much existing regulation. But, it concludes, such a reading is not required. The constitutional text is “ambiguous, and falls to be interpreted on the basis of the historical, legislative and constitutional contexts”,  ― though it is mostly the latter that does the work in the Court’s reasons.
Historical context, in the Court’s view, is inconclusive, because different visions of what form of economic union Confederation would implement were presented by the political actors at the time (none of whom the Court actually quotes). Although it duly notes that “in drafting s. 121, [the framers of the constitution] chose the broad phrase ‘admitted free’ rather than a narrower phrase like ‘free from tariffs'”,  the Court insists that “[w]e do not know why they chose this broader, and arguably ambiguous, phrase”,  and concludes that “the historical evidence, at best, provides only limited support for the view that ‘admitted free’ in s. 121 was meant as an absolute guarantee of trade free of all barriers”. [67; emphasis in the original]
This is bizarre. Surely we can tell that, if the framers were consciously choosing between a narrower and a broader versions of a constitutional ban on barriers to trade, they chose the broader because the narrower did not capture all the barriers they meant to prohibit. As Benjamin Oliphant and I explain in our article on “Originalist Reasoning in Canadian Constitutional Jurisprudence“, the Supreme Court is no stranger to the “originalist inference” ― reasoning from a choice made during the framing of a constitutional text between competing proposed versions of a provision. The inference seems obvious here, but the Court avoids it. Even more remarkably, the Court also ignores the injunction in Bedford that appellate courts are not to re-assess “social and legislative evidence”,  including expert evidence, presented at trial. While the wisdom of this injunction is highly questionable, the Court is, admittedly not for the first time, simply ignoring relevant precedent, without bothering to either distinguish or overrule it.
The “legislative context” that the Court refers to is the placement of s. 121 in a Part of the Constitution Act, 1867 that largely deals with financial issues. The Court considers that its other provisions “attach to commodities and function by increasing the price of goods”, suggestion that s. 121 does not “capture merely incidental impacts on demand for goods from other provinces”, rather that “direct burdens on the price of commodities”. This might be the Court’s best argument, though it may also be that, as the trial judge found, s. 121 was put where it was simply because this was as good a place as any other in the Constitution Act, 1867. Be that as it may, the Court itself does not seem to attach all that much importance to its conclusion on this point.
The heart of the Court’s reasoning is its discussion of the principle of federalism, which it finds to have two implications of particular relevance to the question of the constitutionality of barriers to inter-provincial trade. One is the exhaustiveness of distribution of powers between Parliament and the provinces. The other is the idea of a balance between the powers of the two levels of government ― and the Court’s role in maintaining that balance. As to the former, the Court insists that there must be no “constitutional hiatuses — circumstances in which no legislature could act”.  For any given policy ― including the imposition of barriers to inter-provincial trade ― there must be a level of government competent to enact it, alone or at least in “co-operation” with the other. As to the latter, the Court quotes F.R. Scott for the proposition that “[t]he Canadian constitution cannot be understood if it is approached with some preconceived theory of what federalism is or should be”,  and insists that, rather than “a particular vision of the economy that courts must apply”, federalism “posits a framework premised on jurisdictional balance that helps courts identify the range of economic mechanisms that are constitutionally acceptable”. 
Here, the Court contradicts both the constitution and itself. Constitutional hiatuses are not anathema to federalism. They exist: in section 96 of the Constitution Act, 1867 (which limits the powers of both Parliament and the legislatures to interfere with the independence and jurisdiction of superior courts); in sections 93(1) and (2) (which limit the provinces’ ability to interfere with minority rights in education, without allowing Parliament to do so); and, even on the Court’s restrictive reading, in s. 121 itself. And then, of course, there is the giant constitutional hiatus usually known as the Canadian Charter of Rights and Freedoms, as well as the smaller but still significant one called section 35 of the Constitution Act, 1982. As for the court’s disclaimer of authority and desire to impose a particular vision of federalism or the economy, it is simply laughable. The idea that federalism requires judicially-imposed “balance” rather than the respect of the letter of the constitution, and any conceivable form of economic regulation must be able to be implemented are precisely the sort of preconceptions that the Court pretends to banish from our constitutional law.
Oblivious to its own incoherence, the Court claims that federal balance would be undermined, and a “constitutional hiatus” created, by an overbroad interpretation of s. 121. Instead of “full economic integration”  or “absolute free trade”, the Court propounds what it presents as a compromise:
s. 121 … is best conceived as preventing provinces from passing laws aimed at impeding trade by setting up barriers at boundaries, while allowing them to legislate to achieve goals within their jurisdiction even where such laws may incidentally limit the passage of goods over provincial borders. 
The notion of impediment to trade is seemingly a broad one, extending to any provincial law that “imposes an additional cost on goods by virtue of them coming in from outside the province”,  or indeed bans inter-provincial importation outright. But, crucially, only laws “aimed at” creating such impediments are prohibited by s. 121, and this will be an extremely narrow category. In effect, it seems that only laws serving primarily “purposes traditionally served by tariffs, such as exploiting the passage of goods across a border solely as a way to collect funds, protecting local industry or punishing another province” will count ― and even that “depending on other factors”.  A law having a “rational connection”  to some other regulatory purpose, such as “protecting the health and welfare of the people in the province”,  or most any other conceivable regulatory objective, will survive. The law at issue survives because it is part of a regulatory scheme intended “to enable public supervision of the production, movement, sale, and use of alcohol within New Brunswick”.  Its effects on inter-provincial trade in liquor coming to New Brunswick are merely “incidental”, and constitutionally permissible.
This is wrong in many ways. As a starting point, the Court is answering the wrong question. The issue is not how s. 121 is “best conceived”, but what its purpose is, and how that purpose can be given effect. As Randy Barnett and Even Bernick write in a their essay on purposive constitutional construction (which I reviewed here),
[t]o formulate a rule with reference to the function that the relevant provision is designed to perform is not a matter of making the law “the best it can be” but giving effect to the law as best one can. A judge who decided a case on the basis of some other reason—however normatively appealing that might seem—would be departing from the law entirely. (27)
Second, the Court is wrong to claim that its approach to s. 121 is consistent with precedent. However narrowly it construed s. 121, Gold Seal at least maintained an outright prohibition on inter-provincial tariffs. Following Comeau, tariffs are fine ― provided that they are rationally connected to some regulatory scheme that can be spun to appear to be directed a public health and welfare objective. So much for stare decisis. Most importantly though, as Malcolm Lavoie points out in a CBC op-ed, the Court’s “approach practically nullifies Section 121”, because legislation primarily intended to deal or interfere with inter-provincial trade is already something that provinces cannot enact ― if anyone can, it is Parliament, under section 91(2) of the Constitution Act, 1867. (Professor Lavoie, it is worth noting, is the author of the most important article on the Comeau litigation, which the Court ignored, as it ignored all other scholarship touching on the case, as well as recent work on constitutional interpretation more broadly).
* * *
What causes the Court to re-write the Constitution Act, 1867 (while insisting that it is not making a policy decision), ignore precedent (while admonishing the trial judge for doing so), all in the name of a quest for a federal balance that it is quite different from the one the framers of the constitution struck (while denouncing the imposition of pre-conceived notions of federalism)? Emmett Macfarlane, writing for Maclean’s, denounces Comeau as “craven”, the result of “politicized timidity”. He is not wrong about this (though I think he is in his general denunciation of the federalism jurisprudence), but let me be more specific. In my view there are two (loosely related) problems with the way the Court decided Comeau: its pro-regulatory bias, and approach to constitutional interpretation.
The Court’s bias in favour of regulation appears in the introduction of both the decision as a whole (at , quoted above) and that of the substantive part (at , in similar terms). The Court is preoccupied by the fact that s. 121 might prevent the enactment of some forms of regulation. It is this, rather than the more general notion of “constitutional hiatuses” that leads it to narrow s. 121 into oblivion. As noted above, hiatuses exist, and the Court is actually quite fond of expanding them, s. 96 and the Charter especially. It is the prospect of constitutional limits on economic regulation that makes the Court suddenly desirous to ensure that Canadian legislatures can make or unmake any law whatever.
As for the Court’s interpretive method, it is implicitly, though not explicitly, living constitutionalist. In an appendix to the “Originalist Reasoning” article, Mr. Oliphant and I wrote that in Comeau the Court “be faced with a stark interpretive choice between a very strong originalist case”, which prevailed at trial, “and arguments based (perhaps paradoxically) both on stare decisis and what may be perceived as the needs, or at least the expectations, of current society”. These perceived needs are reflected in the Court’s pro-regulatory bias which causes it to impose its own vision of federalism. And doing so is all the easier if historical evidence can be treated as less significant and worthy of deference than equivalent social scientific evidence, twisted, or even ignored.
* * *
As I wrote in an essay published last year in Diritto Pubblico Comparato ed Europeo, the well-documented hefty costs of the regulatory schemes which the Supreme Court thought it so important to preserve from constitutional challenge, and the fact that this cost is, in many cases, disproportionately borne by the most economically disadvantage members of Canadian society, ought to remind us that “living constitutionalism can come at a price, not only to abstract ideals such as the Rule of Law, but also to individuals and families, including, and even especially, to the most vulnerable”. (644) To be sure, we can in theory demand that our politicians enact inter-provincial free trade even if our judges will not impose it. But this argument could be made in response to literally any constitutional claim. The raison d’être of an entrenched, judicially enforceable constitution is that the political process sometimes fails to translate just demands, and indeed even popular demands, into legislation, due to either the tyranny of self-centred majorities, or the well-organized resistance of self-interested minorities. Section 121 of the Constitution Act, 1867 was enacted in recognition of this reality. The Supreme Court presumes to update our constitution, but it lacks the wisdom of those who wrote it.
It has been said, perhaps unfairly, that Viscount Haldane was “the wicked stepfather of the Canadian Constitution“. The Supreme Court deserves to be called the Constitution’s spoiled child. This child demands that its parent conform to its demands, and throws tantrums whenever it does not. Unfortunately, too many people find this child’s petulance endearing. Perhaps Comeau will convince them that it must, at long last, be made to behave.