Closed: Border opening

"In fact, most vaccines don't fully protect against infection, even if they can block symptoms from appearing. As a result, vaccinated people can unknowingly carry and spread pathogens. Occasionally, they can even start epidemics."

Unfortunately, had Canada, the U.S., and Mexico followed those precautions initially, we wouldn't be in this current situation, less death and severe life-long illnesses, a rapid return to a vibrant economy, and free to travel all of North America.