The great news for Canada and Mexico border visitors is that the U.S. will be lifting land restrictions in November! The new regulations should allow fully vaccinated people access to enter, but they may only stay up to 180 days without obtaining another visa or passport from their own country first (and even then there are other limitations).
The United States just announced plans this week which could potentially pave the way towards more relaxed travel policies for Canadian citizens crossing the border.
U.S. Customs and Border Protection (CBP) border crossing at Pembina, ND. Source: USA CBP Website