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Attitudes and laws around U.S. immigration have vacillated between welcoming and restrictive since the country's beginning.
An Ellis Island clerk and amateur photographer captured the wide-ranging origins of immigrants entering the United States in the early 1900s.
The act put an end to long-standing national-origin quotas that favored those from northern and western Europe.
In 1929, Section 1325 criminalized undocumented immigration for the first time. Its aim was to decrease Mexican immigration.
For decades migrants from Central America have fled their homes from corruption, crime, poverty and violence to seek a better life in the United States. One of the major causes of such strife? The Cold War.
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