The United States will allow fully vaccinated legal travelers to enter the country through land borders in Canada and Mexico, Homeland Security Secretary Alejandro Mayorkas is expected to announce Wednesday.

Beginning early next month, nonessential travelers, such as those entering for tourism or to visit family members, will be required to show proof of Covid vaccination to Customs and Border Protection officers when they cross land borders. A similar, previously announced policy will also take effect at the same time for air travelers entering the U.S.

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The new policy will apply only to legal travel, not to undocumented immigrants, such as the nearly 30,000 Haitians who arrived at the U.S.-Texas border last month. Undocumented immigrants will still be subject to a public health law known as Title 42, which allows DHS to expel all migrants except children who arrive unaccompanied during certain public health emergencies, regardless of whether they plan to claim asylum.

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