What documents are needed to be taken to my USA Immigrant Visa interview?

My interview has not been scheduled nonetheless, but I want to be ready for it and get all my documents that I necessitate to take ready.
Are there any other documents that I also hold to fill out and take with me to the interview?

Thanks!
Answers:   
matrimonial certificate and a statement saying why you did not report this to CIS as soon as you were married. If that be more than 6 months ago you might be in trouble.


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