Who can file a petition on behalf of relatives?
A citizen can file a petition for a spouse, unmarried child under age twenty one, or parents. These are immediate relatives. Moreover, a citizen can also file for an unmarried child of any age twenty one or above, a married child of any age, or a brother or sister. A permanent resident can file a petition for a spouse, your unmarried child under age twenty one, you unmarried child age twenty one or above. A permanent resident cannot file foe married child, for a parent or siblings.