Step-by-step explanation:
President Herbert Hoover moved quickly to deport Mexican Americans as the economy took a nosedive after the Stock Market Crash of 1929. “After President Hoover appointed William N. Doak as secretary of labor in 1930, the Bureau of Immigration launched intensive raids to identify aliens liable for deportation. The secretary believed that removal of undocumented aliens would reduce relief expenditures and free jobs for native-born citizens. The foci of deportations were in south Texas and Los Angeles.
The situation changed substantially when Franklin Roosevelt became president in 1933. After the advent of the New Deal administration of FDR, deportation procedures assumed a more humane aspect. The worst of the deportation terror abated… after 1934 the number of Mexicans being deported fell dramatically by approximately 50 percent.