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The Immigration and Naturalization Service is formed.

1933

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By executive order, the Bureau of Immigration and the Bureau of Naturalization merge into a single agency–the Immigration and Naturalization Service (INS)–to consolidate border patrol, oversee enforcement of immigration law, and supervise the immigration process.

This means that the process for determining citizenship and the process for determining entry to the United States become linked rather than separate activities. In 1940, INS will be moved from the Department of Labor to the Department of Justice in order to more fully control documented and undocumented immigrants.