I'm from EU country but temporary working in Kuwait, so I made my interview in Kuwait, and in the interview the CO, asked me to do 2 things to issue my visa, one of them was the Affidavit of Support, and another one change my passport, but because my medical examination is expiring 2nd of August and i'm not in my country they told me they will give me my visa in this my passport, but I must change it eider before traveling to US eider there in the Embassy once I reach.[/QUOTE I guess this will all depend on when and what you will hear from the embassy. You can decide the best option thereafter