Moreover, Plaintiff would submit that no evidence of record would support the conclusion that any of the “derogatory information” relied upon to deny the Form I-130 was “classified.” In Matter of Estime, 19 I&N Dec. 450 (BIA 1987), the Board discussed a case involving a notice of intent to revoke a previously approved visa petition. In its decision, the Board indicated that “[t]hose portions of the regulation relating to evidentiary requirements in visa petition proceedings apply, of course, to the revocation of approved visa petitions.