President-elect Donald Trump has promised mass deportations. "Operation Wetback" from the Eisenhower days is serving as inspiration.

This episode was produced by Haleema Shah and Miles Bryan, edited by Jolie Myers, fact-checked by Laura Bullard, engineered by Andrea Kristinsdottir and Patrick Boyd, and hosted by Sean Rameswaram.

Transcript at vox.com/today-explained-podcast

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Trump supporters hold signs reading "Mass Deportation Now!" at the Republican National Convention in July. Photo by Alex Wong/Getty Images.

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