F4 — Sibling of citizen immigration lawyers
About the F4 category
The F4 family fourth-preference category lets adult U.S. citizens petition for their brothers and sisters, with the sibling's spouse and minor children eligible as derivatives. It is the most backlogged of all the family categories, with waiting times measured in many years and varying significantly by country of birth. Because the timeline is so long, early and accurate filing is genuinely valuable — the priority date is set when the I-130 is filed. Families also need to plan for derivative children who may age out during the wait and for documenting the sibling relationship, which can require older or foreign civil records.
Who the F4 category is for
- You are a U.S. citizen petitioning for a brother or sister.
- The sibling's spouse and minor children qualify as derivatives.
- The most backlogged family category — file early to lock the priority date.
How the process works
How a family case unfolds: the U.S.-citizen or permanent-resident relative files an I-130 petition that proves the family relationship. For immediate relatives there is no visa-number wait; for the preference categories, the family then waits for the priority date to become current in the monthly Visa Bulletin. Once a visa is available, the relative abroad completes consular processing through the National Visa Center and a U.S. embassy interview, or — if already lawfully in the United States — files for adjustment of status. An affidavit of support is required to show the household can financially sponsor the immigrant, and a medical examination and background checks complete the case.
Common F4 pitfalls
A handful of avoidable problems account for most setbacks in these cases — nearly all of them easier to fix before filing than after:
- Filing late — the priority date set at filing is everything here.
- Derivatives aging out before a visa becomes available.
- Proving the sibling relationship with older foreign birth records.
Related family options
Not sure the F4 is the right fit? These related routes are worth comparing:
- All family immigration lawyers
- IR-1/CR-1 — Spouse of US citizen
- IR-2/CR-2 — Child of US citizen
- IR-5 — Parent of US citizen
- F1 — Adult unmarried child
How an immigration lawyer helps with a F4 case
A family-based immigration lawyer helps you choose the right petition, document the relationship convincingly, clear affidavit-of-support and admissibility hurdles, and prepare for the interview. They also handle the complications that quietly derail cases — a prior overstay, a criminal record, an earlier marriage, a missed deadline or a previous denial — when those are spotted early rather than at the interview window.
Choosing the right immigration lawyer
When you compare the immigration lawyers above, weigh real experience with F4 cases against fit: an attorney who explains things clearly, answers promptly and quotes transparent fees will make the whole process less stressful. Immigrantio profiles are built to make that comparison easy — practice areas, experience, languages, location, consultation pricing and verified reviews are all on one page — so you can move from a long list to a confident choice without trawling through search results.
What to expect from a consultation
Booking a consultation is the practical next step. Expect the lawyer to ask about your background and goals, give you a candid assessment of your eligibility, walk through the process and timeline, point out anything that could complicate the case, and set out their fees clearly. It is also your chance to judge whether this is someone you want to work with. Consultations with the immigration lawyers above are typically held by video or phone and scheduled within a day or two of reaching out.
Why use Immigrantio
This is exactly what Immigrantio is built for: comparing real, verified immigration lawyers for F4 cases in one place. Instead of scrolling through advertisements, you see each attorney's credentials, experience, languages, location, client reviews and consultation fees on a single page. Every practice is Bar-licensed and verified, there are no hidden referral fees, and you contact and work with the lawyer directly — Immigrantio simply helps you find the right one.
Compare the immigration lawyers above and book a consultation to talk through your case, understand a realistic timeline, and learn what the process will cost — so you can move forward with a clear, informed plan.











