Proof of Full COVID-19 Vaccination Required to Enter U.S. from Canada and Mexico

Proof of Full COVID-19 Vaccination Required to Enter U.S. from Canada and Mexico

On January 20, 2022, U.S. Department of Homeland Security (USDHS) announced that all non-U.S. citizens entering the U.S. via land and ferry terminal ports of entry from Canada or Mexico must provide proof of full vaccination for COVID-19.  This requirement is effective as of January 22, 2022.
These restrictions were originally announced by USDHS on October 29, 2021 to be effective “starting in January 2022”, but the new announcement confirms the effective date as January 22, 2022.   

The new restrictions apply to all non-U.S. citizens traveling to the U.S. for both essential (such as work, study) and non-essential (such as tourism) travel.  The restrictions do not apply to U.S. citizens, U.S. lawful permanent residents (Green Card), or U.S. nationals. 
This announcement makes the travel restrictions at land and ferry ports of entry the same as at air ports of entry. 

The full announcement is available on a DHS Fact Sheet here, and at a DHS FAQ here.

The CDC listing of acceptable vaccines and vaccine documentation is available here.