28 C.F.R. § 16.26
(a) In deciding whether to make disclosures pursuant to a demand, Department officials and attorneys should consider:
(b) Among the demands in response to which disclosure will not be made by any Department official are those demands with respect to which any of the following factors exist:
(c) In all cases not involving considerations specified in paragraphs (b)(1) through (b)(6) of this section, the Deputy or Associate Attorney General will authorize disclosure unless, in that person's judgment, after considering paragraph (a) of this section, disclosure is unwarranted. The Deputy or Associate Attorney General will not approve disclosure if the circumstances specified in paragraphs (b)(1) through (b)(3) of this section exist. The Deputy or Associate Attorney General will not approve disclosure if any of the conditions in paragraphs (b)(4) through (b)(6) of this section exist, unless the Deputy or Associate Attorney General determines that the administration of justice requires disclosure. In this regard, if disclosure is necessary to pursue a civil or criminal prosecution or affirmative relief, such as an injunction, consideration shall be given to: