Iowa Admin. Code r. 641-104.2
When the state registrar is satisfied that a certificate was registered through fraud or misrepresentation, the state registrar shall give to the person named in the certificate a notice in writing of the state registrar's intention to cancel said certificate. The notice shall give such person an opportunity to appear and show cause why the certificate should not be canceled. The notice may be served on such person, or in the case of a minor or incompetent, on parent or guardian by forwarding the notice by certified mail to the last-known address on file in the division. Unless such person or the parent or guardian shall within 30 days after the date of mailing the notice show cause satisfactory to the state registrar why the certificate shall not be canceled, the state registrar may cancel the certificate, and it shall not be available for certification.
Iowa Admin. Code r. 641-104.2