Canada's environment minister Catherine McKENNA tells François Picard and Mairead Dundas why she believes Canadian courts will reject Conservative challenges to the Trudeau government's carbon pricing plan. Subscribe to France 24 now: f24.my/youtubeEN FRANCE 24 live news stream: all the latest news 24/7 f24.my/YTliveEN Catherine MCKENNA, Canadian Minister of Environment and Climate Change, on Canada's carbon tax Visit our website: www.france24.com Subscribe to our YouTube channel: f24.my/youtubeEN Like us on Facebook: www.facebook.com/FRANCE24.English Follow us on Twitter: twitter.com/France24_en