Can a Green Card Holder Sponsor a Child?

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Permanent residents, also referred to as green card holders, may petition for their children to live in the United States as permanent residents as well. Since the U.S. Citizenship and Immigration Services (USCIS) defines a "child" as being an individual who is under the age of 21 and is unmarried, a permanent resident may also include his or her child's children in the petition if the child has any. A permanent resident may also petition for unmarried sons and daughters age 21 and older and include their children in the petition as well if they have any.