Every parent wants a better life for his or her child. As a citizen or permanent resident of the United States, you may file a petition to bring your child into the country. Even a child age 21 or older may gain entry and permanent residency under certain circumstances.
Of course, certain rules and regulations exist, governing the entry of a child who does not have U.S. citizenship or permanent residency. Before you file a petition, however, you need to make sure that the family member meets U.S. Citizenship and Immigration Services' definition of "child."