Bruce Arthur: The sickening of America is Canada’s biggest outside threat. Keep that border closed

Frankly, Canada has enough COVID-19 problems. We have a clutch of flat-earth no-vaccine wackos blocking the ambulance bay in a Vancouver hospital, and sprinklings of similar protesters at Queen's Park, lonely and lost. Quebec is reopening schools amid unsettled science, and Ontario's premier had two daughters visit for Mother's Day, then fumbled the public health recommendation for everyone else. Oh, and Bryan Adams stepped in it. And by it, we mean xenophobia.