She took nothing to the interview except the Interview letter and her passport. The first thing they asked her for was for wedding pics. She told them that we did have any because we do not take photos. Everything that was needed was already in the package that I had sent from the US to the NVC. I did take alot of time to make sure that everything that is required would be in that package including tax returns and even sent transcripts to back it up. I sent copies of current paystubs and a letter from my employer. If you look at the instructions on the the state.gov website you will see that everything is already in the package you send to the National Visa Center (NVC) and nothing is else should be required. I was prepared for them to give us an RFE(request for additional info) and felt confident that I could send any information they required from the US. I also didn't worry too much because I had made 4 trips to morocco in the last year and if it was necessary I was willing to fly back and go to consulate to push the process through. I did the "choice of agent form" and paid the fees over the internet and I was pretty happy with the fast responses through email that we got from the NVC. Don't be afraid to call them if you have a delay because they do answer the phone and they will give you some assistance. They did have a delay setting an appointment date for the interview and mysteriously, the day after I called the NVC we got an interview date by email. After the interview they gave her back all the docs that I had sent to the NVC and gave here a green paper and told her to come back on friday but then rescheduled her for monday. When she got there monday, it was the usual moroccan inefficiency. First they said they had not visa for her, then after showing them the paper and telling them that she was called, they pulled the file and said that it was incomplete and could not issue the visa. They told her that my tax info was missing, but after pressing them a little and telling them it was there, they found it and took and extra hour to issue the visa. But anybody that's every been to morocco knows that's the way it is there. I still have not received anything in the mail regarding her social security info. If I don't get something soon, i'm going to have to check on it. I'll let you know how it goes.