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 Canadian Supreme Court Justices Russell Brown and Thomas Wakeling for a discussion of the Canadian Supreme Court’s 2021 ruling upholding the GHGPPA and broader questions of federalism in the environmental regulation context.