; or (ii) on any date thereafter, at the discretion of the head of the appropriate department or agency. (C) Request to reopen (i) In general An applicant who receives a denial under subparagraph (A) may submit a request to reopen a request for classification and referral under the process established under paragraph (1) so that the applicant may provide additional information, clarify existing information, or explain any unfavorable information. (ii) Limitation After considering 1 such request to reopen from an applicant, the head of the appropriate department or agency may deny subsequent requests to reopen submitted by the same applicant. (5) Form and content of referral To the extent practicable, the head of the appropriate department or agency shall ensure that referrals made under this subsection— (A) conform to requirements established by the Secretary of State for form and content