As unemployment rose after 1929, federal immigration raids, county welfare policies and public campaigns pressed people of Mexican descent to leave the United States. Los Angeles County organised trains to the border and other counties followed; relief was withheld from Mexican families, and highly publicised raids such as that in La Placita in Los Angeles in February 1931 spread fear well beyond those actually detained. A majority of those who went were United States citizens, chiefly the American-born children of Mexican immigrants, and many had no legal process at all. Estimates of the total run from 400,000 to two million. Labour demand in the Second World War reversed the flow, and the Bracero programme began recruiting Mexican workers in 1942. In 2005 the California legislature passed the Apology Act for the 1930s Mexican Repatriation Program, formally apologising for the state's role in the unconstitutional removal of United States citizens and legal residents; no comparable federal apology has been issued.
United States federal, state and county authorities pressed or deported Mexicans and Mexican Americans, many of them US citizens, to Mexico during the Depression
The 1930 US census, the only one to record 'Mexican' as a race, counted about 1,692,000 people of Mexican origin, falling to about 1,592,000 in 1940 despite natural increase. The number repatriated is disputed: Gratton and Merchant estimate about 355,000 movements to Mexico in the 1930s, Hoffman over 400,000 for 1929-37 and Rosales 600,000 for 1929-36, while a California legislative inquiry claimed up to 1.8 million; formal deportations numbered about 82,000.
There was no significant death toll. The harm consisted in the loss of citizenship rights, homes, property and family separation, and in the destitution of families arriving in a Mexico unprepared to absorb them; deaths in transit were not systematically recorded and were not a defining feature of the episode.
The removal of United States citizens without due process and the use of immigration raids and detention to induce departure are documented in county and federal records and are recited in the findings of the California Apology Act of 2005.
United States of America, Mexico