Prime Minister Justin Trudeau said Canada “won’t back down” from President Trump’s threat to impose a 25 percent tariff and that Ottawa will respond accordingly until they are removed. “We’re showing the new American administration that they have a strong partner in Canada when it comes to upholding border security, all while simultaneously underscoring that we won’t back down, that if tariffs are implemented against Canada, we will respond,” Trudeau said Friday while addressing the advisory council on Canada-U.S. relations. “We won’t relent until tariffs are removed and, of course, everything is on the table,” he added. Trump has once...