Yes, a legal and bona fide marriage to a USA citizen can help him to obtain a permanent resident status, provided that he came to USA legally on a visa. Based on your post, I don't see any other options.
I offer legal consultations and can assist in matters of the U.S. federal immigration law to clients from all 50 States and internationally. If you�d like to schedule a confidential telephone or email legal consultation, need legal advice or help, please let me know and I�d be glad to help you.
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