if u have gone to jail and they have taken your finger print therea......and if they scan your fingerprint during re-entry even u maintain valid f1 status they will not let you in. i guess they scan your fingerprints again while reentering at airport at port of entry....be careful though. mero case complex nai theo..ani malai u.s pheri pharkina na payea ni baal theana....tara yaha sabailea ja bhaneko bhayera naya i-20 ma try gareko theana ....visa reject bhayeo...thikai bhayeo sabaiko chitta ni bujeo yaha ani mailea afnai desh ma pheri old life bachna payea....ma ta happy chu j bhayea ni!!!! if u r very serious abt your re-entry dont take a chance in this condition i suggest.