12 CFR §19.28

1. (a)General rule. The Comptroller may review a ruling of the ALJ prior to the certification of the record to the Comptroller only in accordance with the procedures set forth in this section and § 19.23.
2. (b)Scope of review. The Comptroller may exercise interlocutory review of a ruling of the ALJ if the Comptroller finds:
   1. (1)The ruling involves a controlling question of law or policy as to which substantial grounds exist for a difference of opinion;
   2. (2)Immediate review of the ruling may materially advance the ultimate termination of the proceeding;
   3. (3)Subsequent modification of the ruling at the conclusion of the proceeding would be an inadequate remedy; or
   4. (4)Subsequent modification of the ruling would cause unusual delay or expense.
3. (c)Procedure. Any request for interlocutory review must be filed by a party with the ALJ within ten days of the ruling and must otherwise comply with § 19.23. Any party may file a response to a request for interlocutory review in accordance with § 19.23(d). Upon the expiration of the time for filing all responses, the ALJ will refer the matter to the Comptroller for final disposition.
4. (d)Suspension of proceeding. Neither a request for interlocutory review nor any disposition of such a request by the Comptroller under this section suspends or stays the proceeding unless otherwise ordered by the ALJ or the Comptroller.