I-130 for a sibling or unmarried child

The family-preference categories (F1, F2A, F2B, F3, F4)

Family-preference cases are sorted into five categories, each with its own annual cap [Tier 1: 8 USC §1153(a), https://www.law.cornell.edu/uscode/text/8/1153; Tier 1: travel.state.gov, Directory of Visa Categories, https://travel.state.gov/content/travel/en/us-visas/immigrate/family-immigration/family-preference-immigrant-visas.html]:

• F1 — unmarried sons and daughters (21 or older) of US citizens.
• F2A — spouses and unmarried children (under 21) of lawful permanent residents.
• F2B — unmarried sons and daughters (21 or older) of lawful permanent residents.
• F3 — married sons and daughters of US citizens.
• F4 — brothers and sisters of US citizens, where the citizen petitioner is 21 or older.

A sibling case is an F4case and requires a US citizen petitioner who is 21 or older [Tier 1: USCIS.gov Form I-130 page, https://www.uscis.gov/i-130]. An unmarried child's category depends on the child's age and the petitioner's status — an unmarried adult child of a US citizen is F1, while an unmarried child of a permanent resident is F2A (under 21) or F2B (21 or older). The categories with the largest backlogs, including F4, can run many years.

The Visa Bulletin

Because preference categories are capped, the Department of State publishes a monthly Visa Bulletin that shows how far the line has moved in each category and country of chargeability [Tier 1: travel.state.gov Visa Bulletin]. The bulletin is the instrument that tells a preference-category case whether a visa number is available yet.

Reading the bulletin has its own mechanics — two separate charts, per-country columns, and the meaning of “current.” The Priority dates and the Visa Bulletin page walks through all of it step by step.

Priority dates

The priority dateis the date USCIS received the I-130. It is printed on the I-797C receipt notice and it fixes the case's place in line [Tier 1: USCIS.gov, Visa Availability and Priority Dates, https://www.uscis.gov/green-card/green-card-processes-and-procedures/visa-availability-priority-dates]. A preference-category case waits until its priority date is reached in the relevant category and country before a visa number becomes available.

Filing early matters precisely because it sets an earlier priority date and therefore an earlier place in line. The date does not move; the line moves toward it.

CSPA and the age-out clock

Multi-year waits create a specific problem: a child who is under 21 when a case is filed can turn 21 — “age out” — before a visa becomes available, which can shift the case into a different category or a longer line. The Child Status Protection Act (CSPA)addresses this by providing a formula that can, in some cases, freeze or reduce a beneficiary's age for immigration purposes [Tier 1: USCIS.gov, Child Status Protection Act, https://www.uscis.gov/green-card/green-card-processes-and-procedures/child-status-protection-act-cspa].

The CSPA calculation depends on the category, the filing and approval dates, and how long a visa number takes to become available — the details vary case by case. Whether and how CSPA applies to a particular child is a fact-specific question a licensed immigration attorney can address.

Sibling-specific document requirements

A sibling (F4) case proves that two people share at least one parent. The documents USCIS describes for a brother-or-sister petition generally include [Tier 1: USCIS.gov Form I-130 page, https://www.uscis.gov/i-130]:

• The petitioner's birth certificate and the sibling's birth certificate, both showing the name of at least one common parent.
• Evidence of the petitioner's US citizenship (the F4 category requires a citizen petitioner 21 or older).
• For half-siblings or siblings related through a step-parent, additional documents such as the relevant marriage certificates to connect the two people through the common parent.
• Where a name has changed, a marriage certificate or court order documenting the change.
• Certified English translations of any non-English document under 8 CFR §103.2(b)(3) [Tier 1: 8 CFR §103.2, https://www.law.cornell.edu/cfr/text/8/103.2].

Unmarried-child-specific document requirements

An unmarried-child case proves the parent-child relationship and the child's unmarried status. The documents USCIS describes generally include [Tier 1: USCIS.gov Form I-130 page, https://www.uscis.gov/i-130]:

• The child's birth certificate showing the name of the petitioning parent.
• Evidence of the petitioner's status — US citizenship for an F1 case, or the green-card copy for an F2A or F2B case.
• For a case based on a father-child relationship where the child was born out of wedlock, evidence of legitimation or of a bona fide parent-child relationship, as USCIS describes.
• Because the category turns on the child being unmarried, a later marriage can change the category (for example moving an F1 case into F3) — the documents have to reflect the child's status accurately.
• Certified English translations of any non-English document under 8 CFR §103.2(b)(3) [Tier 1: 8 CFR §103.2, https://www.law.cornell.edu/cfr/text/8/103.2].

The I-130 documents page covers the general document categories that apply across relationship types.

What happens when the priority date becomes current

When the Visa Bulletin shows that a case's priority date has been reached in its category and country, a visa number is available and the case can move forward. From there the path depends on where the beneficiary is:

• A beneficiary abroad proceeds through consular processing at the National Visa Center and a US embassy or consulate [Tier 1: travel.state.gov, The Immigrant Visa Process, https://travel.state.gov/content/travel/en/us-visas/immigrate/the-immigrant-visa-process.html]. The NVC process page walks through that stage.
• A beneficiary in the United States in a qualifying status may be able to file Form I-485 to adjust status once a visa number is available [Tier 1: USCIS.gov Form I-485 page, https://www.uscis.gov/i-485].

The consular processing vs adjustment of status page explains the branch in detail. Whether a particular beneficiary can adjust status or has to process abroad depends on the individual facts, and a licensed immigration attorney can address them.

Related pages

• Priority dates and the Visa Bulletin
• How the I-130 process works
• Documents you'll need for I-130
• Consular processing vs adjustment of status