F2B to F1 when a parent naturalizes: which line is shorter

Two petitions change category on the same day

A green card holder can petition for a spouse or child under 21 (F2A) and for an unmarried son or daughter 21 or older (F2B). The moment that parent takes the oath of citizenship, USCIS treats the existing petitions as if a citizen had filed them. Nobody files anything new: the Policy Manual calls this automatic conversion, and the beneficiary keeps the original priority date. Two things then happen.

• F2A becomes immediate relative. A child under 21 on the day of naturalization is now the child of a citizen. Immediate relatives have no yearly cap, so there is no cutoff to wait for, and USCIS says on its CSPA page that the child’s age freezes on the date the parent became a citizen.
• F2B becomes F1. An unmarried son or daughter 21 or older moves to the first preference, the unmarried son or daughter of a citizen. F1 still has a cap and a cutoff, so the beneficiary keeps waiting, only in another row of the bulletin.

F2A: the clear gain

For a minor child the conversion removes the line. This month the F2A Final Action Date is September 22, 2026 for most countries and March 22, 2026 for Mexico, so a recent F2A filing can still sit months or years behind. After naturalization that wait disappears; what remains is processing by USCIS or the consulate. The age freeze matters too: a child who would have turned 21 in the F2A line no longer needs the CSPA formula, because an immediate relative’s age is fixed. Our CSPA guide explains what happens to children who stay in a preference line.

F2B to F1: check the two dates before celebrating

Many families assume that a citizen’s petition is always faster. The bulletin says otherwise. Both F1 and F2B are capped, both are split by country of chargeability, and in some columns F2B has run ahead of F1 for years. The table compares the two Final Action Dates this month and counts, since October 2015, how often F2B was the more advanced of the two.

This month F1 is the slower line in Mexico: there, a son or daughter who converts falls further from the front, and staying in F2B is the shorter wait. In the worldwide column, F1 reads January 22, 2020 against August 22, 2019 for F2B, yet F2B was ahead in 87 % of the bulletins since 2015, so this month’s order is not a rule.

Take a son born in Mexico whose F2B priority date is June 1, 2009. In this month’s bulletin that date is current in F2B and about 9 months behind in F1. If his mother naturalizes now and he does nothing, he moves from a line where his visa is available to one where it is not.

The opt-out under INA 204(k)

The law allows the son or daughter to refuse the conversion and remain in F2B. The Policy Manual cites INA 204(k)(2) for this, and the USCIS CSPA page describes the steps:

• The beneficiary writes and signs the letter, not the parent.
• The letter says the beneficiary wishes to opt out of the conversion from F2B to F1, and gives the names and dates of birth of the beneficiary and the parent and the I-130 receipt number.
• It goes to the USCIS office that approved the I-130, named on the approval notice. A family that cannot find it can call the USCIS Contact Center, which the Policy Manual also lists as a way to make the request.

The opt-out is a choice about which cutoff to follow, so it only makes sense after comparing both rows for the beneficiary’s country of chargeability. Because the two lines trade places over time, a family may want a licensed immigration attorney or a DOJ-accredited representative to look at the timing, especially if a wedding or a consular interview is near.

A child who already aged out of F2A

Some sons and daughters reach F2B by another road. A child listed with a parent in an F2A case, or named in an F2A petition, can turn 21 with a CSPA age that is too high. The Policy Manual says that a derivative child of a green card holder’s spouse who ages out converts automatically to F2B as a principal beneficiary, with no new petition and with the priority date of the original filing. The CSPA chapter adds that an F2A applicant who does not qualify under the formula may continue on the petition converted to F2B or F1. For these families the naturalization question comes twice: first the move from F2A to F2B at 21, then the move from F2B to F1 at the oath, each time with the same date.

What to check in the month of the oath

• The two Final Action Dates for the beneficiary’s country, F1 and F2B, in that month’s bulletin.
• Whether the beneficiary is married or planning to marry.
• Where the case is: still at USCIS, or already sent on for consular processing.
• The receipt number and the approving office, both on the I-797 approval notice.

Marriage changes the answer

The conversion rules also explain why some families time the naturalization before a wedding. The Policy Manual is plain about it. An F2B beneficiary who marries has no category left, because there is no visa for the married son or daughter of a green card holder; under 8 CFR 205.1 an approved petition is revoked automatically on the marriage. An F1 beneficiary who marries converts to F3, the married son or daughter of a citizen, and keeps the priority date. A divorced F3 beneficiary converts back to F1. So a son or daughter who stays in F2B by opting out keeps the faster line but also keeps the rule that marriage ends the case.

How long the parent’s naturalization takes

None of this happens until the oath. USCIS reported an average of 12.7 months to decide a naturalization application in its latest report to Congress, and the range at each field office is on our N-400 processing time page. A parent who can file Form N-400 now should know that the conversion lands on the day of the oath, not the day of filing, and that for an F2A child under 21 that day can decide whether the child is still a child.

This guide describes the rules USCIS publishes; it is not legal advice, and we are not affiliated with USCIS or the State Department.