The Deportation Campaigns of the Great Depression. It has happened here [View all]

Source-https://www.history.com/news/great-depression-repatriation-drives-mexico-deportation
Subtitle- Up to 1.8 million people of Mexican descent—most of them American-born—were rounded up in informal raids


snip-"The Deportation Campaigns of the Great DepressionThese were part of the “repatriation drives,” a series of informal raids that took place around the United States during the Great Depression. Local governments and officials deported up to 1.8 million people to Mexico, according to research conducted by former California State Senator Joseph Dunn, who in 2004 investigated the deportations under President Herbert Hoover. Dunn estimates around 60 percent of these people were actually American citizens, many of them born in the United States to first-generation immigrants.
Snip-These were part of the “repatriation drives,” a series of informal raids that took place around the United States during the Great Depression. Local governments and officials deported up to 1.8 million people to Mexico, according to research conducted by former California State Senator Joseph Dunn, who in 2004 investigated the deportations under President Herbert Hoover. Dunn estimates around 60 percent of these people were actually American citizens, many of them born in the United States to first-generation immigrants."

more there.