US Immigration from Jersey

Hello Everyone,

I intend filling a petition for my biological mother, however my mother is current married to another man, my question is can my mother's husband immigrate with her when the petition is approved and visa become available to her. I have read about derivative option online and my understanding is, a spouse or children of I-130 beneficiary can accompany or follow to Join the applicant. Will that be the case for my mother and the current husband? how do I go about it to bring her and the husband together? Please help. Thank you in advance.

Hello Everyone

I received a RFE on a filed petition for my mother, I don t have any of the secondary evidence they are requesting at hand but RFE state that If you don t have any of secondary evidence available, you must first establish that evidence is not available by submitting evidence of non-existence. After which u can submit an Affidavit sworn to by two people testifying their personal knowledge about your relationship to each other. My question here is how is this evidence of non-existence done? It is a mere letter to USCIS stating you do not have them...please help..Thanks for the help.