In 2018, Canada enacted the Greenhouse Gas Pollution Pricing Act, establishing minimum national standards for carbon pricing in an effort to meet emission reduction targets under the Paris Agreement. The Act no doubt advances the laudable goal of reducing man-made climate change. But is it constitutional? Join Russell Brown, retired Justice of the Canadian Supreme Court and Thomas Wakeling, retired Justice of the Court of Appeal of Alberta, for a discussion of the Canadian Supreme Court’s 2021 ruling upholding the GHGPPA and broader questions of federalism in the environmental regulation context.