UPDATE DECEMBER 31, 2020–  The U.S. Department of Homeland Security again extended measures to restrict non-essential travel to the U.S. from Canada and Mexico through land ports of entry and ferry terminals. The travel restrictions will remain in place through January 21, 2020 and will likely be extended further. The United States previously reached mutual agreements with Canada and Mexico to limit non-essential travel at land ports of entry and ferry terminals to reduce the spread of COVID-19. The restrictions do not apply to air travel.  Information concerning the scope of the travel restrictions and exemptions is available here.