
collective decision making” or with the ultimate goal of effective government
(para. 32). However, this third rationale of “efficiency”, while an important tenet
of Cabinet privilege, has not been articulated by our Court as such. As a result, I do
not agree that it was unreasonable for the Commissioner to not address a concept
that is fully expressed only in scholarly authority (see Karakatsanis J.’s reasons, at
paras. 30 and 36, citing Y. Campagnolo, “The Political Legitimacy of Cabinet
Secrecy” (2017), 51 R.J.T.U.M. 51, at p. 68, and Y. Campagnolo, Behind Closed
Doors: The Law and Politics of Cabinet Secrecy (2021), at p. 26) (at para. 76).
It is worth repeating how Karakatsanis J herself framed the issue: “had the IPC framed
the purpose of s. 12(1) more broadly, he may not have rejected a central argument from
Cabinet Office going to the scope of s. 12(1)” (at para. 35, my emphasis). This gets things
backwards: the submission could only have been a “central argument” if the Commission
had agreed that the “purpose” of s. 12(1) should have been “framed…more broadly”. I have
some difficulty appreciating how this can be described as “reasons-first” reasonableness
review as Vavilov requires. There is an important difference between this case and the
Supreme Court’s recent decision in Mason (noted here), where the tribunal had simply
failed to address a central argument for an unarticulated reason, not because of the
purpose it ascribed to the provision.
Furthermore, and fundamentally, the choice of standard of review is of critical
importance here. On reasonableness review, the Commissioner is in the interpretive
driving seat. If deference is to mean anything it all, it must be up to the Commissioner to
determine whether the law should be changed to incorporate an additional rationale as
background context for s. 12(1). As it was, the Commissioner gave multiple reasons in
support of his interpretation and, ordinarily, on a deferential standard his refusal to
change, extend or expand the law would be respected. On correctness review, by contrast,
the courts have the last word (and, indeed, Côté J applying correctness review agreed that
the law should be updated to incorporate this third rationale). This should have been an
example — a pretty good one, I would have thought — of the standard of review making a
difference. In my view, reasonableness was the appropriate standard, for reasons I
developed here and from which Côté J’s neatly-done argument at para. 55-61 does not
dissuade me, and an appropriately deferential approach would have led to the decision
being upheld as reasonable.
The discussion of legal and factual constraints is also worthy of comment. Again, there is
an important difference from Mason: there, the legally binding constraint of international
law identified by the Supreme Court at least had the merit of being set out expressly in
statute; but here, the conventions and traditions relied upon by the Supreme Court are
entirely unwritten. This is different even from CSFTNO (discussed below), where the
relevant Charter values had been expressed repeatedly in binding Supreme Court of
Canada jurisprudence on the objectives of s. 23 of the Charter.
Here, the conventions and traditions have not and arguably cannot be reduced to precise
textual statements (and, of course, by their very nature are not binding law at all). Indeed,