By: Martin Olszynski, Nigel Bankes, and David Wright
Case Commented On: Reference re Impact Assessment Act, 2023 SCC 23 (CanLII)
PDF Version: Wait, What!? What the Supreme Court Actually Said in the IAA Reference
This past Friday, October 13, the Supreme Court of Canada released its opinion in Reference re Impact Assessment Act, 2023 SCC 23 (CanLII) (IAA Reference). Writing for a 5:2 majority (Justices Mahmud Jamal and Andromache Karakatsanis dissenting), Chief Justice Richard Wagner held that what is known as the “designated project” (or “major project” in colloquial terms) review scheme of the Impact Assessment Act, SC 2019, c 28, s 1 (“IAA”) is unconstitutional. This post sets out what is, and is not, constitutional about the IAA regime. We begin by first clarifying the Act’s current legal status. We then set out the principles – post-IAA Reference – of federal and provincial jurisdiction over the environment generally, and then with respect to impact assessment specifically. This is followed by a discussion of the IAA’s specific constitutional defects as found by the majority, the implications of those defects, and their potential remedies. We conclude with some observations regarding the IAA Reference’s relevance to future constitutional battles over federal clean electricity regulations and an oil and gas greenhouse gas emissions cap.