Commentary: Now Trump’s cruel border policy is spreading in Canada

At almost 4,000 miles, the United States’ northern border is about twice as long as the U.S.-Mexico border — much of it wild, unmarked and dangerously cold for half the year. And yet, human smuggling and deaths at the U.S.-Canada border have not been a major phenomenon, as they have been down south. Nor has Canada poured billions of dollars into a network of walls, fences, robotic dogs and militarized border patrol. It is also true that historically the number of asylum seekers and migrants seeking entry