If the spouse of a U.S. citizen is already studying in the United States, it is most convenient to apply for a green card for the spouse. If everything goes well, you can get the green card in a few months.
Since there is no timetable for U.S. citizens to apply for a green card for their spouse, they can submit I-130 and I-485 together, and they can also apply for I-765 (employment card) and I-131 ( AP).
After the spouse receives the I-485 receipt notice, he or she will have legal I-485 waiting status in the United States. This process is relatively fast. If there are no special accidents, you can usually get a green card in a few months.
Required documents generally include:
Completed and signed I-130, I-485, I-765, I-131, U.S. citizenship certificate, marriage certificate,* **Proof of property, G-325A, copies of passports of both parties, recent color photos, physical examination form I-693, etc.