333.2—Attachment of photographs to documents.
A signed photograph of the applicant must be securely and permanently attached to each certificate of naturalization or citizenship, to each original and duplicate declaration of intention issued by the Service, and to each replacement copy of a declaration of intention, certificate of naturalization, or certificate of citizenship issued by the Service. If a seal is affixed to the document, the imprint of a part of the seal must extend over the lower portion of the photograph in such a manner as not to obscure the features of the applicant.