Green Card for Other Close Family Members of a U.S. Citizen
U.S. immigration law allows certain aliens who are family members of U.S. citizens and lawful permanent residents to become lawful permanent residents (get a Green Card) based on specific family relationships.
Family member of a U.S. citizen, meaning you are the:
Unmarried son or daughter of a U.S. citizen and you are 21 years old or older
Married son or daughter of a U.S. citizen
Brother or sister of a U.S. citizen who is at least 21 years old
Family member of a lawful permanent resident, meaning you are the:
Spouse of a lawful permanent resident
Unmarried child under the age of 21 of a lawful permanent resident
Unmarried son or daughter of a lawful permanent resident 21 years old or older