However, “a reasonable inference does not rise to the level of substantial and probative evidence requisite to the preclusion of approval of a visa petition in accordance with section 204(c) of the Act.” Matter of Tawfik, 20 I. & N. Dec. 166, 168 (BIA 1990). “In the decades since Matter of Tawfik was decided, the BIA has maintained this policy of requiring direct evidence of fraud in a non-citizen's file to warrant application of the marriage fraud bar.