President Biden spoke by video conference with Prime Minister Justin Trudeau of Canada on Tuesday, trying in his first virtual meeting with a foreign leader to restore a sense of normalcy to a core relationship brusquely upended by former President Donald J. Trump. Mr. Trump often cast America’s northern neighbor, close ally and key trading partner as an economic predator and insulted Mr. Trudeau as “two-faced,” “weak” and “dishonest.” Tuesday’s tone could hardly have been mo