August 9, 2021: Border changes
Fully vaccinated foreign nationals will be allowed to enter Canada for discretionary travel on the following dates if they meet specific criteria:

August 9: American citizens and permanent residents of the United States, currently residing in and arriving from the United States, and who qualify for the fully vaccinated traveller exemption
September 7 (intended start date): All other foreign nationals who qualify for the fully vaccinated traveller exemption
Travellers are no longer required to book a 3-night hotel stopover when entering Canada