Hello, I would appreciate some advice on my adjustment of status and EAD applications which I submitted last year June. I have receipt numbers, but did not find out till just 5 months ago that my cases were on hold because of a 'request for additional evidence'. I still have not received this mail ...

Hi, what sort of documents are required to prove a solid, not-for-profit marriage at a green card interview based on marrying a US citizen?
I love my husband, so we are trying to be extra well-prepared before D-day. Thanks! SLC