Only U.S. Citizens may petition for extended family members in the first, third and fourth preference categories. Permanent Residents may only petition for their spouses, children under the age of 21, and adult, unmarried sons and daughters.
There are four family-sponsored preference categories:
- FIRST Preference: Unmarried sons and daughters over the age of 21 of U.S. Citizens;
- SECOND Preference: Spouses, children and unmarried sons and daughters of permanent residents;
- THIRD Preference: Married sons and daughters of U.S. citizens and their spouses and children; and
- FOURTH Preference: Brothers adn sisters of U.S.citizens at least 21 years of age, and their spouses and children.