I got my GC on March 2003 in EB-II category. I now qualify to apply for Citizenship on either Employment based or Marriage-based grounds since my wife is a US Citizen (by birth). Here's my issue: my past employer that sponsored my GC made a STUPID administrative error mid-way through the process. Somehow they sent a letter to INS telling them that I had left the company (when in fact I was still working for them and had expressed no intention to leave and was in good terms with them) and requested INS to cancel my H1B visa. About 7 months later they got a letter from INS confirming cancellation of my visa. That's when they realized their mistake! Until this point I was not even aware of what they did. Anyway, the company lawyers sent a letter to INS saying that they were very sorry about the mistake and that it was an administrative error (they meant to send someone else's name but sent my name by mistake). They requested INS to reinstate my visa. INS came back to them with strong words effectively scolding them for being fools but thankfully, reinstated my visa. The problem was that for some strange reason, they reinstated my visa as of about 1 month after the date my visa was originally cancelled by them. This meant that for that period of 1 month, I was effectively Out-Of-Status, which is a very serious matter. I was fully expecting that they would eventually deny my GC (which was parallely going on while this drama was unfolding). I was overjoyed to find out later that I got my GC without any issues or references to the visa issue. My $64,000 question is: will they dig up everything again if I now apply for Citizenship and deny, or worse, deport me because of that Out-Of-Status issue? What if I apply based on marriage criteria, will that make my situation better? Given all this, I have nightmares applying for Citizenship because I have so much to lose compared to the benefits of getting Citizenship. Or am I just being paranoid? Any inputs would be greatly appreciated! Thanks for reading my rather long posting.