Hello Everyone,
I am a citizen of U.S and I filed for my siblings (F4 Family preference VISA) with a priority date Nov 20, 2006. I never received any update until my beneficiary received a letter last week stating that " This letter is a notification that a visa number is available". and I have one year before termination of the visa application. If I submit all the required documents and receive a DQ from NVC. How long will my brother wait till he can be interview at the U.S embassy in Lagos?. Any ideas of the timeline/years to get interview date?. Can the visa number be exhausted before his interview?. What is the probability of getting visa if he waits for two or three years. Thank you for your reply.