It is not the job of USCIS to answer legal questions. In fact, they cannot answer these types of questions. If you do not know how to do something or how to answer questions, it is time to hire an attorney.
Irene Vaisman, Esq. 11 Broadway, Suite 615 New York, NY 10004 (646) 253-0516 This is not legal advice and a client attorney relationship is not created. For a free consultation call (646) 253-0516.
That's because USCIS is not your "friendly" legal adviser. They are your "judge", so they don't owe you legal advice. For that you go to a good immigration attorney. Applying for a green card is a complicated, detail-oriented process, with a few minefields, and you will have many many more questions along the way. I recommend you at least consult an attorney before you file.
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Generally someone who marries a US citizen is eligible as c (9) category. However the paperwork required for a green card is lengthy and complex so I highly recommend consulting an immigration attorney.
Alexus P. Sham firstname.lastname@example.org (917) 498-9009. The above information is only general in nature and does not constitute legal advice. It does not create an attorney-client relationship.