I went to the interview with my wife, who is a DV lottery winner. We have been married for ten years. Our interview was in London in August 2010. They didn't ask for any additional documents or evidence of marriage such as wedding photos etc. What you should bring with you to the interview are the documents listed in the NL. Naturally, marriage certificate is very important as it is the official document that proofs your marriage.
Because my wife is the DV lottery winner, she was asked lots of "tricky" questions in the interview. For example: when did you get your high school diploma? When I tried to help her, the officer got angry because I am not the winner but my wife is. Therefore, I shouldn't say anything and she must answer the questions correctly. Ok, that suited me fine.
Because my wife is the winner, they checked only her school diplomas. My wife had a high school diploma but she didn't have a document that would show the scores for each course she took in high school, so the officer became unsure if my wife's high school degree is comparable to that in the U.S. It turned out to be a problem, but we managed to sort that out. Then again, the officer started to hesitate about issuing the visa, as my wife has been house wife for the past ten years and she won't be working in the U.S. Our idea is that I will be working and she will stay home, taking care of our kids that we're planning to have after moving to the U.S.
At that point, I showed the officer my PhD diploma and a letter from my (non-US) employer explaining my position, salary and a work history of eight years in that organization. I believe there is a strong demand for my skills and experience in the U.S. and it seemed that the officer thought so, too. Once the officer saw these documents, she became convinced that my wife and I will not be a burden on U.S. social services and I will be able to get a job (and a salary) that enables our life in the United States. Only now I was allowed to speak on behalf of my wife, and the rest of the interview was between me and the officer.
Last edited by dalmatian; 30th December 2010 at 04:07 AM.