Aha!!!! Lagos!!! Thanks for posting that. Lagos cases receive a LOT of scrutiny. This will, likely, be an uphill battle. USCIS will send you a letter explaining why the visa was denied. You will have an opportunity to answer the denial. Once you get the letter, it might be wise to consult a competent attorney. There are members here who have successfully overcome a denial....but I think a consultation would be wise. Good luck.