Fifteen months after the onset of the coronavirus pandemic, the U.S.-Canada border remains closed to all but essential travel, cutting off families, would-be tourists, and billions of dollars in commerce. Travel from the U.S. to Canada is down more than 80 percent since before the pandemic. Both countries have imposed strict limits on who can cross the border, but Canada’s restrictions are tighter, and its enforcement is far more severe. Travelers who fly into Canada must land at one of four airports and then pay to spend the first three nights of a 14-day mandatory quarantine at a designated “stopover” hotel, at a cost the U.S. government says could exceed $1,600. There are no exceptions, even for fully vaccinated people or Canadian citizens. The restrictions have essentially forced Canada’s lone Major League Baseball team, the Toronto Blue Jays, and its lone NBA team, the Toronto Raptors, into exile in the U.S.