illegal alien(redirected from Undocumented worker)
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illegal alien:see alienalien,
in law, any person residing in one political community while owing allegiance to another. A procedure known as naturalization permits aliens to become citizens.
Each nation establishes conditions upon which aliens will be admitted, and makes laws concerning them.
..... Click the link for more information. ; immigrationimmigration,
entrance of a person (an alien) into a new country for the purpose of establishing permanent residence. Motives for immigration, like those for migration generally, are often economic, although religious or political factors may be very important.
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