US Immigration from Madagascar

My wife applied for a social security card when she came to the United States last December. She received her social security number at the office, but her card was lost in the mail. Because the social security offices are closed, she was told to send in her original passport, birth certificate, and other documents to receive a new card. She does not feel comfortable doing that. The banks I do business with require my wife to produce her social security card to open an account. Legally, she isn't required to do so, but the banks policies that I know of require it. Anyone have any suggestions for her to open a bank account?

I was laid off a week before my fiance moved to the US on a K1 visa. We married a couple days after she arrived, and then we filed the i-134 papers. Because I was laid off, I needed a joint sponsor. My employer brought me off of layoff since then. I now have enough income to satisfy any financial support requirements to my spouse. Is there any way to free the joint sponsor of legal and financial obligations to my spouse? My spouse's green card interview is next week.

What kind of child custody papers do I need for the green card interview as the husband of an immigrating spouse? My ex-wife and I never filed any formal custody papers. We had one son and he is staying with his mother. My ex-wife has custody but we agreed our son could stay wherever he wanted. He will be eighteen next February and will be graduating from university next June. There is a child support agreement in the divorce papers. I pay her $400 per month.