Summary
U.S. citizens may sponsor their unmarried children for permanent residency, with processing times depending on the child’s age.

Eligibility Criteria
• The petitioner must be a U.S. citizen
• The child must be unmarried
• Children under 21 qualify as immediate relatives (IR-2)
• Children 21 or older fall under the family preference category (F1)
• Biological, adopted, and stepchildren may qualify

Conclusion
This category offers a structured pathway for U.S. citizens to reunite with their children while accounting for age-based visa availability.