U.S. President Donald Trump expanded on his decision to cut off trade talks with Canada on Friday, accusing an Ontario ad of being a bid to 'illegally influence the United States Supreme Court.' Prime Minister’s Council on Canada-U.S. Relations member Jean Charest and former Canadian ambassadors to the U.S. Frank McKenna and Derek Burney weigh in on Prime Minister Mark Carney's decision to say Canada 'stands ready' to return to negotiations, instead of making a policy concession as he did to end Trump's last hiatus.
