Last week, Donald Trump announced that Guantanamo Bay would be used to house the “worst criminal illegal aliens” and claimed that it would be drastically scaled up to hold as many as 30,000 people. In addition to its infamous role in the War on Terror, it’s the latest use of Gitmo as an immigration deterrent—and legal grey zone.

Guest: Andrea Pitzer, author of One Long Night: A Global History of Concentration Camps.

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Podcast production by Elena Schwartz, Paige Osburn, Anna Phillips, Madeline Ducharme and Rob Gunther.

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What Next | Guantanamo Bay’s Comeback Is a Warning