We just noticed that there is a mismatch with the date of my now wife's passport port of entry stamp and her I-94. She arrived on her K1 visa October 17, which is stamped on her passport. But on her I-94 which we retrieved online, it is dated 10/18. We are about to file for AOS, and we are wondering if this matters? If not, do we need to contact USCIS? We had issues with obtaining her SSN, and now we are thinking that this might be one of the reasons .