By: Nathan Murray and Martin Olszynski

Decision Commented On: Reference re Impact Assessment Act, 2023 SCC 23 (CanLII)

PDF Version: Locating the Constitutional Guardrails on Federal Environmental Decision Making after Reference re: Impact Assessment Act

This post is the seventh ABlawg commentary on the Supreme Court of Canada’s Reference re: Impact Assessment Act, 2023 SCC 23 (CanLII) (IAA Reference) decision from October 2023. In the most recent of those posts, one of us briefly noted the majority’s preoccupation with the concept of “adverseness” when delineating the scope of federal environmental jurisdiction under the Impact Assessment Act, SC 2019, c 28, s 1 (IAA). The majority’s preoccupation with that concept actually pervades the IAA Reference decision. Here, we focus squarely on the majority’s treatment of the concept of “adverseness” and its role in the public interest decision-making stage of federal impact assessment. Continue reading →