U.S. citizens may sponsor the following relatives for permanent residence: spouses, children, adult sons and daughters, parents and brothers and sisters.
Lawful permanent residents are limited to sponsoring spouses, children and unmarried adult sons and daughters.
Except for spouses, children and parents of U.S. citizens who are deemed “immediate relatives”, all other categories of relatives are subject to a numerically-limited preference system.
Immigration Through A Family Member (USCIS)
• Green Cards for Spouse, Parents and Children of U.S. Citizens (USCIS)
• I AM A CITIZEN: How Do I Help My Relative Become a U.S. Permanent Resident? (USCIS)
• I AM AN LPR: How Do I Help My Relative Become a U.S. Permanent Resident? (USCIS)
• How Do I Get Green Cards for My Children? (USCIS)
• USCIS News Release – New Adoption Regulations (10-04-07)
• How Do I Bring a Sibling to Live in the United States? (USCIS)
• How Do I Financially Sponsor Someone Who Wants to Immigrate? (USCIS)
• How Do I File an Affidavit of Support for a Relative? (USCIS)