The US says it will reopen its borders with Mexico and Canada to fully vaccinated travellers from November.
The Department of Homeland Security said in a statement that it will allow travel for non-essential purposes through land and ferry crossings.
From January 2022, it will also require proof of vaccination for any travel over these crossings, essential or not.
The US has restricted travel from its northern and southern neighbours since March 2020, due to the Covid pandemic.