Depression-Era Mexican Repatriation Holds Lessons on Mass Deportations

As the new Trump administration moves to expand immigration enforcement, California lawmakers have passed a measure urging the state’s schools to teach a largely forgotten chapter of American history — one historians say offers a direct, uncomfortable preview of what large-scale deportation campaigns actually look like in practice.

A Mass Expulsion Most Textbooks Skip

During the Great Depression, somewhere between 500,000 and 2 million people of Mexican descent were removed from the United States, pushed south across the border in what’s come to be known as the Mexican Repatriation. The wide range in estimates itself reflects how poorly documented the episode remains: unlike a formal deportation program authorized by a single law, the repatriation unfolded through a patchwork of local and county-level pressure campaigns across the Southwest and Midwest, driven by the widespread belief that Mexican immigrants were taking jobs desperately needed by white American citizens during the economic collapse.

What makes the episode particularly striking, historians note, is who actually left. Roughly 60 percent of those pushed out were U.S. citizens by birth — American children and adults whose only connection to Mexico was their ancestry, rounded up and sent across a border many of them had never crossed before in their lives. Francisco Balderrama, a Chicano studies professor at California State University, Los Angeles, and co-author of the book “Decade of Betrayal,” has spent decades documenting the episode’s lasting toll: families broken apart, possessions lost, and in some cases, family members who died attempting to make their way back to the only country they’d ever called home.

A History California Only Recently Required Schools to Teach

That the episode remains so poorly known today is itself part of the story. A group of fourth and fifth graders in California successfully lobbied state legislators in 2015 to require that the repatriation’s history actually be taught in classrooms — an unusual grassroots campaign that succeeded specifically because the deportations had been so thoroughly omitted from standard textbooks and curricula for more than 80 years. The measure heading to the governor’s desk this January builds directly on that earlier student-led effort, formalizing the requirement at a moment when the parallels to current political rhetoric have become difficult for lawmakers to ignore.

Does Mass Deportation Actually Help the Economy It’s Meant to Protect?

The 1930s repatriation wasn’t simply a matter of prejudice untethered from any economic theory — it was explicitly justified, at the time, as a jobs program for native-born Americans. That claim has since been directly tested by economists, and the results complicate the argument considerably. Economist Giovanni Peri’s research, examining labor markets in the years following the repatriation, found no meaningful evidence that removing Mexican and Mexican-American workers from the labor force actually improved employment or wages for the U.S.-born workers the policy was ostensibly designed to help. “This debate has been going on for at least 100 years,” Peri noted, describing a pattern that has repeated itself: mass removal of immigrant labor promised as an economic salve, without economic data afterward to support the claim.

Familiar Rhetoric, Separated by Eight Decades

The rhetorical echoes between the 1930s campaign and the current political moment are, to historians studying the period, difficult to miss. Officials in the 1930s rallied around slogans like “American Jobs for Real Americans,” framing an entire ethnic group as responsible for the nation’s economic distress regardless of individual immigration status — a framing that treated “Mexican” as a racial category to be removed, not a legal status to be adjudicated case by case. That same basic pattern, historians argue, risks repeating whenever mass deportation is proposed as a solution to economic anxiety, since the practical mechanics of removing large numbers of people quickly tend to sweep up citizens and long-settled legal residents alongside anyone actually undocumented, regardless of how carefully a policy is worded on paper.

A Warning, Not Just a History Lesson

For advocates who pushed California’s legislature to act, the point of requiring this history in classrooms was never purely academic. Understanding how the 1930s repatriation actually unfolded — not through a single law or a single villain, but through a diffuse combination of local pressure, economic scapegoating, and bureaucratic indifference to due process — offers students a framework for recognizing similar dynamics as they surface again, rather than assuming any repeat of mass removal would necessarily look identical to what happened eight decades ago. Whether that history lesson translates into meaningfully different policy outcomes this time remains, as the new administration’s enforcement plans take shape, very much an open question.

For related coverage of immigration enforcement, see our piece on Los Angeles students using theater to prepare for anti-immigrant crackdowns, or browse our full Policy & Rights archive.