The Biden Administration has lifted border restrictions for land and ferry crossings with Canada and Mexico, and a host of other countries for air travel (mostly Europe) to fully vaccinated travelers on November 8. This comes several months after Canada reopened its borders. Unvaccinated visitors will still be barred from entering the United States from Canada or Mexico at land borders. The reopening effectively signals a new phase in the recovery since restrictions were put in place in March 2020.
Travelers entering the U.S. will be questioned by Customs and Border Protection (CBP) officers about their vaccination status before being allowed to cross. CBP officers will have discretion to send travelers to secondary screenings for their documents to be checked, but there will be no testing requirement for those crossing the land borders.