OTTAWA — Shortly after his election in late 2015, Prime Minister Justin Trudeau declared “Canada is back,” promising a renewed Canadian presence on the world stage. Trudeau has taken political hits since then for minor lapses, such as a luxury family holiday visit to a Caribbean island and an ill-fated trip to India, but his biggest challenge, just a year before Canadians go to the polls, has come from the leader of Canada’s longtime military ally and economic partner. Now, Canadians worried that their government has been sidelined in crucial trade talks and may be forced to back down on...
