Immediate relatives include:
- The spouses of U.S. citizens,
- The children (unmarried and under 21 years of age) of U.S. citizens,
- The parents of U.S. citizens at least 21 years old, and
- Widows or widowers of U.S. citizens if the U.S. citizen filed a petition before his or her death or if the widow(er) files a petition within 2 years of the citizen’s death.