Hoping for some flexibility, especially after poor Liberal election results on the Prairies last fall.
After three days of submissions, court said it would issue a ruling as soon as it’s able.
Ottawa argues that authorization for the tax comes under the Constitution’s peace, order and good government clause.
Glenn Murray says carbon taxes will take too long to work, given how quickly the planet is warming.
Canadian Civil Liberties Association is challenging the law, saying it violates free speech provisions.
Government expects about 1,300 workers will be affected by the shutdown of coal plants by 2030.
Data does not include results from the CleanBC climate plan that set targets of buildings.
Province argues that Ontario’s Court of Appeal was wrong to find the carbon price was constitutional.
Ontario has set Aug. 30 as a deadline for stations to have the stickers posted or face fines of up to $10,000 a day.
Saskatchewan recently applied to have the top court push back its December hearing in order to better co-ordinate its challenge with ones from other provinces.
Last time Canada was without any woman as premier was between November 2002 and November 2008.
Ontario, Alberta, Manitoba, New Brunswick and BC have also filed notices of intervention in the province’s appeal.
Carbon tax should replace other, less efficient policies with the same objective and be offset by cuts in other taxes.
Canada only recycles about 9% of the plastic it produces.
Doug Ford said if carbon tax opponents lose in the courts, they will win at the ballot box in October, as Andrew Scheer has promised to scrap the tax.