Canada's top court rules federal carbon pricing is legal, defeats provincial challenges

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OTTAWA (Reuters) - Canada's Supreme Court ruled in favour of the federal government's carbon pricing policy on Thursday, upholding a central pillar of Prime Minister Justin's Trudeau's climate plan.

Noting that climate change is a threat to the country as a whole, the country's top court upheld the legality of the Greenhouse Gas Pollution Pricing Act, which had been challenged by the provinces of Alberta, Saskatchewan and Ontario.

"Parliament has jurisdiction to enact this law as a matter of national concern," Chief Justice Richard Wagner wrote in the ruling.

(Reporting by Steve Scherer and Nia Williams in Calgary)