By the end of the month, air travelers will again need passports when flying between the USA and Mexico and the Caribbean (including Bermuda). Faced with an overwhelming backlog of passport applications, the Department of Homeland Security issued a temporary ruling in June that allowed air travelers to fly as long as they carried proof that their passports were pending, according to Travel Weekly.

But with that temporary reprieve about to expire, the DHS sent out a press release last week “reminding air carriers and the traveling public that the temporary Western Hemisphere Travel Initiative accommodation allowing U.S. citizens to travel by air within the Western Hemisphere using a Department of State official proof of passport application receipt will end as scheduled at midnight on Sept. 30.” Next year, the law will be extended to include land border crossings, according to Travel Weekly Passports.