21 March 2020 – Barred all non-essential travel across Mexican and Canadian borders

Intervention Categories: International travel measures
Level of Jurisdiction: Federal

Overview: The U.S. Department of Homeland Security reached an agreement with Mexico and Canada to limit border crossings to essential travel only for 30 days, at which point the policy will be reviewed.
Full details here: https://www.dhs.gov/news/2020/03/23/fact-sheet-dhs-measures-border-limit-further-spread-coronavirus