who:Immigrants who came to the U.S from all over the world
When:By the early 1960's
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what:The United States has an illegal immigration problem as immigrants enter the country illegally by crossing the border between the United States and Mexico, or they enter legally but overstay their visas. The United States Immigration Reform is specifically targeting the problem of 12 to 20 million undocumented workers in the United States.
Where:The United States
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