The President announced today that starting in early November adult foreign nationals traveling to the United States must be fully vaccinated. The White House will also rescind the current geographic COVID-19 related travel bans implemented for individuals from China, Iran, the Schengen Area, U.K., Ireland, Brazil, South Africa, and India.
US citizens are not subject to the rule meaning that unvaccinated Americans may travel overseas and return without proof of vaccination. However, they must either: Provide proof of a negative test result taken within one day of their departure or provide proof that they have purchased a viral test to be taken after arrival.
White House FAQ: