More information (though maybe biased) source here <a href="https://www.plasticstoday.com/legislation-regulations/court-overturns-canadian-classification-some-plastics-toxic" rel="nofollow noreferrer">https://www.plasticstoday.com/legislation-regulations/court-...</a><p>Basically sounds similar to US cases over what an agency can enforce. The federal government tried to regulate without legislation, and the court decided they were much too broad with what they tried to ban with it.