A U.S. citizen’s child who is under 21 and unmarried can immigrate as an Immediate relativeSpouses, unmarried children under 21, and parents of U.S. citizens. These categories are not subject to annual numerical limits.See it in the glossary, with no annual cap on visas. Once that child turns 21, or marries, the picture changes. The case moves into a family preference category with a yearly limit, a Priority dateThe date a petition was filed, or a labor certification was submitted, used to determine an applicant's place in line for a visa category with limited annual numbers.See it in the glossary and, for many families, a wait measured in years rather than months.
This guide explains the categories, what the current Visa BulletinA monthly State Department publication showing which family and employment visa categories currently have visas available.See it in the glossary shows, and the events that can move a case from one line to another. It is general information, not an assessment of any family’s case.
The three categories that matter
Immigration law sorts a citizen’s children by age and marital status. The State Department’s Visa Bulletin lists the annual numbers set by the Immigration and Nationality Act:
- Immediate relative: an unmarried child under 21 of a U.S. citizen. No annual numerical limit applies, so there is no category queue, although processing still takes time.
- F1: unmarried sons and daughters, 21 or older, of U.S. citizens. The law allots 23,400 visas a year, plus any numbers not needed in the F4 category.
- F3: married sons and daughters of U.S. citizens, of any age. The law allots 23,400 a year, plus numbers not needed by F1 and F2.
A citizen cannot petition in these categories for a stepchild or adopted child unless the relationship meets the legal definition of “child,” which has its own age and timing rules. Our Visa Library comparison of F1 and F3 walks through the definitions.
Why the wait can be so long
Each family preference category receives a fixed number of visas a year. Demand has exceeded that supply for decades. On top of the category limit, a Per-country limitThe cap, set at 7 percent of the combined family and employment totals, on how many preference visas may go to natives of any single country in a fiscal year.See it in the glossary caps how many preference visas any single country can receive, set at 7 percent of the combined family and employment limits. For fiscal year 2026 the bulletin put that figure at 28,862.
When a country’s demand is heavy, its applicants wait longer than people from elsewhere in the same category. That is why the bulletin lists separate dates for mainland China, India, Mexico and the Philippines.
What the current dates show
A petition’s filing date becomes its priority date. A visa can be issued only when that date is earlier than the “Final Action DatesThe Visa Bulletin chart showing the priority dates for which a visa number can actually be issued or a green card approved in that month.See it in the glossary” in the bulletin for the category and country. In the September 2026 bulletin, the final action dates were:
- F1: January 22, 2020 for most countries, including China and India; January 1, 2008 for Mexico; May 1, 2013 for the Philippines.
- F3: October 22, 2014 for most countries, including China and India; July 1, 2001 for Mexico; February 22, 2006 for the Philippines.
Put simply, an adult married child of a citizen born in Mexico whose petition was filed in mid-2001 was only reaching the front of the line in September 2026. For most other countries, F3 applicants who filed in late 2014 were just becoming eligible.
These dates are not a forecast. The bulletin itself noted that recent advances were made partly because issuance to nationals of certain countries has slowed under administration actions, and warned that RetrogressionWhen a Visa Bulletin cutoff date moves backward, usually because demand exceeded the numbers available for that category.See it in the glossary may be necessary in coming months. We covered the large family movements in our September bulletin report. Fiscal year 2027 begins October 1, and a new bulletin will reset the picture.
Two charts, two purposes
The bulletin publishes two sets of dates. “Final action dates” control when a visa or green card can actually be approved. “Dates for FilingThe Visa Bulletin chart showing the earliest priority dates for which applicants may submit documents, or in some months file for adjustment of status, ahead of a visa number being available.See it in the glossary” let applicants start submitting documents earlier. USCIS decides each month which chart people in the United States may use to file for Adjustment of statusThe process of applying for a green card from within the United States, rather than through a consulate abroad. Filed on Form I-485.See it in the glossary. For September 2026, USCIS told family-sponsored applicants to use the dates for filing chart, according to its filing charts page. Being able to file early is useful, but it does not mean a green card can be approved sooner.
Events that move a child from one line to another
Turning 21
A child who was an immediate relative becomes an F1 applicant at 21 unless an age protection applies. The Child Status Protection Act can freeze a child’s age for immediate relatives at the date the petition was filed, which is why filing before a child’s 21st birthday matters. Our Visa Library guide to CSPA age-out risk explains how the calculation differs by category.
Getting married
If an F1 beneficiary marries, the petition converts to F3, keeping the original priority date. Because F3 dates are often older, marriage can lengthen the wait. If an immediate-relative child under 21 marries, the case also moves to F3. Marriage in the other direction matters too: if an F3 beneficiary divorces, the case can convert to F1.
A parent naturalizing
If the parent was a green card holder who filed in F2B for an adult unmarried child, and the parent becomes a citizen, the case generally converts to F1. For some Filipino applicants, F2B has at times moved faster than F1, and the law allows a beneficiary in that situation to opt to stay in F2B. Our comparison of F2A and F2B covers the permanent resident side.
Where the child lives matters
A child outside the United States waits abroad and completes the process at a U.S. embassy or consulate once the date is current. A child already in the United States can adjust status only if eligible under the adjustment rules, which generally require lawful admission and, for preference categories, maintained status. Overstaying or working without authorization while waiting can make a child ineligible to adjust, even with a current date. See adjustment versus consular processing.
Consular capacity can also slow a case after its date is current. The State Department paused immigrant visa interviews worldwide on August 25, 2026, as we reported in our coverage of the pause.
What a waiting period does not give
An approved petition places a relative in line. It does not grant permission to live, work or study in the United States, and it does not make a visitor visa easier to obtain. A pending immigrant petition can make it harder to show the temporary intent a tourist visa requires, as we explain in our guide to visiting during a pending case.
Practical steps for families
- File as early as the relationship allows. The priority date is the filing date, so time spent deciding is time added to the wait.
- Keep the petition’s receipt notice and track the priority date against each monthly bulletin.
- Tell the government promptly about a marriage, divorce or a parent’s naturalization, since each can change the category.
- Keep civil documents current. Birth certificates, marriage records and police certificates must be valid when the case is reached, and some expire.
- Check both charts and the USCIS monthly instruction before filing anything in the United States.
The short answer
A U.S. citizen’s adult child can immigrate, but rarely quickly. The speed depends on the category, the country of chargeability, the priority date and events such as marriage or a parent’s naturalization. For the system behind these lines, read our explainer on the immigration queue and our Visa Library overview of the family preference categories.
Common questions
Does the child’s age at filing or at approval decide the category?
It depends. For immediate relatives, the Child Status Protection Act generally freezes the child’s age on the date the petition was filed, so a child who was under 21 then usually stays an immediate relative. For preference categories, a different formula applies that takes processing time into account. Families near a 21st birthday should file as early as possible.
Can a U.S. citizen petition for a married child and the child’s family?
Yes. In F3, the married son or daughter is the principal beneficiary, and their spouse and unmarried children under 21 can generally immigrate as derivatives on the same case with the same priority date.
Will the wait get shorter in the new fiscal year?
No one can say. The State Department sets dates month by month based on demand and limits, and its September 2026 bulletin specifically warned that retrogression may be needed. Families should read each new bulletin rather than rely on forecasts.
Can the adult child study or work in the U.S. while waiting?
Only with a separate status that allows it, such as a student or work visa. Those visas have their own requirements, and a pending immigrant petition can make temporary visas harder to obtain because of the intent rules.