Non-essential travel between US-Mexico-Canada that was supposed to resume on January 21, has been moved further down to February 21. This means that the borders of the three countries remain closed until February 21. In a tweet, the Department of Homeland Security mentioned that the three countries have agreed to postpone the date of reopening of their borders.
The US has had one of the toughest times during the pandemic, with 424,434 deaths since March 2020. Canada on the other hand has had 18,880 total deaths up until now, while Mexico recorded 147,614 total deaths.
Even though the land borders remain closed, travellers are able to fly into the three countries by following quarantine rules, and other regulations as laid down by the respective governments. Mexico for example is permitting US and Canadian citizens to travel by air.