As of today, November 8, 2021, COVID-19 related Proclamations restricting entry into the U.S. have now been terminated as relating to: Presidential Proclamations 9984 (China), 9992 (Iran), 10143 (Schengen Area, United Kingdom, Republic of Ireland, Brazil, and Republic of South Africa) and 10199 (India).
Any non-citizen wishing to enter or re-enter the US, must show proof of vaccination. President Biden signed, on October 25, 2021, a Presidential Proclamation titled: “A Proclamation on Advancing the Safe Resumption of Global Travel During the COVID-19 Pandemic”. Going forward, all non-citizen, non-immigrant air travelers to the United States will be required to be fully vaccinated and to provide proof of COVID-19 vaccination status prior to boarding any flight destined to the U.S., with only limited exceptions, beginning on November 8, 2021. Please check the CDC website and the State Department for further information. See links below.
More information regarding air travel requirements can be found on International Travel | CDC and COVID-19 Traveler Information (state.gov).