Canada may be a wide open country but 90% of Canadians live within 100 miles of the border. The difference is that there was no politicization of the virus or getting the vaccine in Canada. Every political party was onboard with the same messaging from the very first day telling the public... its highly contagious, it affects people differently, can be deadly to those with health issues, and that immediate action was needed to prevent it from spreading and overloading the health system.
The country went into a two month lockdown between March and May 2020, with everything being closed except for essential services. Those that could, worked remotely from their homes. Those that couldn't do that or go to work at all because their companies were shut down, were provided $2,000 per month government aid.
By summer 2020, mask wearing was mandatory in all indoor locations with limitations placed on the number of people allowed inside a store at any given moment. No gatherings - exceeding 6 people - were permitted either indoors or outdoors. Those rules remained in place for an entire year. It wasn't until June 2021 wherein over 50% of the population had been vaccinated that restrictions began to ease up. The country is still not fully back to normal, as the easing of the rules are being done in a step by step manner but it is expected to be by September 1st.
Canada was smart in its handling of the pandemic. The US has been utterly stupid in theirs.