We have received a particularly remarkable green card approval a few weeks ago. USCIS alleged fraud and denied the green card where the spouse of a US citizen had entered the US on visa waiver and then applied for Adjustment of Status (AOS) within a few days after entry. We were retained once the green card had been denied. The allegations of fraud or misrepresentation are particularly troublesome because they operate as a PERMANENT bar against immigration. There is a narrowly tailored waiver available, but it can be difficult to obtain.
Here are some experiences with regards to my entire track from NIW I-140 petition to I-485 approval. I had somewhat of an unique case, so if anyone here is in the same boat, this may be of help to you. I have done the entire process by myself, without an attorney, and long hours of research in the law library on U.S.C. Section 8.
Arrived to US in 1991 on J-1, not subject to section 212e, changed to F-1 on arrival. Became an H-1 in 2001 and filed for NIW in March of 2002, case was backlogged due to 9-11.