Beyond immediate relatives, family immigration runs through four numerically capped family preference categories, each its own family preference visa line tracked by priority date on the monthly Visa Bulletin. Here’s the whole journey, in plain English.
Numerically capped preference categories, F1 through F4, each with its own waiting line.
One petition starts it: the filing date becomes your priority date, your place in line.
The longest waits: sibling cases, and applicants born in India, Mexico, and the Philippines
The preference system sorts family by relationship and by sponsor. Find your family preference category first; everything else follows from it.
the F1 visa covers unmarried adult children (21+) of U.S. citizens, and the F1 visa requirements are simply that relationship plus the sponsor's citizenship. This F1 category visa waits behind an annual cap.
spouses and unmarried minor children of green card holders.
unmarried adult children of green card holders.
married children of U.S. citizens.
the F4 family preference category covers brothers and sisters of adult U.S. citizens. The longest line of all.
The visa F1 process, like every one of the family preference categories, runs the same five steps.
The sponsor files Form I-130. The filing date becomes the priority date: the immigrant's place in line.
Watch the monthly Visa Bulletin. When the category and country reach your date, a visa number is available. Waits range from a couple of years to decades, longest for F4 and for India, Mexico, and the Philippines.
Complete adjustment of status (I-485) in the U.S., or consular processing (DS-260) abroad, with the I-864 Affidavit of Support
Interview and green card approval.
Watch for category-shifting events: marriage (F1 to F3, and marriage ends F2 eligibility), divorce, aging out (protected in part by the Child Status Protection Act), and the petitioner's naturalization. Each can speed up, slow down, or end a case.