I originally posted this question on expatriates.stackexchange.com, and another user suggested that I ask the question on this site because he felt it is more closely related to travel...
My wife was granted a conditional permanent resident status (green card) in the US and we started the process for removing the conditional status while we were living in the States after being married for more than two years (as per the requirement). Before receiving a response to our application, we made the decision to return to her home country for work reasons. We recently received mail from USCIS requesting further documentation to prove the "legitimacy" of our marriage. The deadline to submit the additional documents recently passed, and I had already decided to give up pursuing the application process anyway, since we will not be returning to live in the US for at least five years. My concern (and question) is this: Can my wife still travel to the US to visit my family, or will the lapsed/failed green card status create an issue that prevents her from even entering the country?