Canadian Prime Minister Justin Trudeau has relied on immigration to drive economic growth and plug labor gaps, but now he is hitting the brakes after a seismic shift in public opinion that could undermine his chances to win the next election. It was Trudeau's father, Pierre, who championed immigration as prime minister in the early 1970s, promoting "multiculturalism" as government policy. But when international students led a surge in immigration in the wake of the pandemic, the public mood sour