Supreme Court considers the constitutionality of the Liberal government’s carbon tax
OTTAWA — Supreme Court justices pushed lawyers from Saskatchewan and Ontario hard Tuesday, demanding to know how Canada can help stop climate change if any single province chooses not to help.
But several of the justices also raised concerns that the federal government’s carbon tax legislation might give Ottawa too much discretion.
The issues were raised during the first of two days of hearings this week on whether the federal government’s Greenhouse Gas Pollution Pricing Act is constitutional.
The act was implemented in 2019, imposing a carbon price in any province without an equivalent system of its own. The appeals courts in Saskatchewan and Ontario ruled the law was constitutional in 2019, but in February of this year the Alberta Court of Appeal said it was not.


