The United States will now require all foreign nationals to be vaccinated, and show proof of their vaccination status, in order to enter the country, the Biden administration announced Monday.
The new mandate, which is expected to go into effect in early November, is set to apply to all international travel.
The mandate also lifts the 14-day quarantine requirement for foreign vaccinated travelers, but will require those individuals to test negative within three days of departure.
The Centers for Disease Control and Prevention is currently determining which vaccines meet the U.S. standard for foreign travelers.
White House COVID-19 Response Coordinator Jeffrey Zients also announced Monday that unvaccinated Americans returning to the U.S. will now be subject to "stricter testing requirements."
Zients said those unvaccinated Americans will be required to test within one day of departure from their international location, and will be required to test again when they arrive in the United States.
Zients said the move will "protect Americans at home" and will "enhance the safety" of the international air travel system.
Meanwhile, border restrictions on nonessential travel between the U.S., Canada and Mexico have been extended again – through Oct. 21.
U.S. travel bans were first imposed in March 2020, during the early days of the COVID-19 pandemic, by former President Donald Trump.
As for masks, Zients added that the mask requirement on airplanes was extended by President Biden earlier this month, and added that the Transportation Security Administration is now doubling fines for passengers who refuse to mask.
"It's simple," Zients said. "Masking helps stop the spread of COVID-19. If you break the rules, be prepared for the consequences."