After issuance, temporary labor certifications are subject to
invalidation by the INS upon a determination, made in accordance with
that agency's procedures or by a Court, of fraud or willful
misrepresentation of a material fact involving the temporary labor
certification application. If evidence of such fraud or willful
misrepresentation becomes known to a Regional Administrator, Employment
and Training Administration or to the Administrator, the Regional
Administrator or Administrator as appropriate, shall notify the INS in
writing.