to the technical assistance review letter be again reviewed for adequacy, the Assistant Secretary shall provide the additional review. (3) If the assertion of previous Federal acknowledgment under section 8 cannot be substantiated during the technical assistance review, the petitioner may respond by providing additional evidence. A petitioner that claims previous Federal acknowledgment and fails to respond to a technical assistance review letter under this subsection, or whose response fails to establish the claim, shall have its documented petition considered on the same basis as documented petitions submitted by groups not claiming previous Federal acknowledgment. Petitioners that fail to demonstrate previous Federal acknowledgment after a review of materials submitted in response to the technical assistance review shall be so notified. Such petitioners may submit additional materials concerning previous acknowledgment during the course of active consideration. (d) Consideration of documented petitions The Assistant Secretary shall— (1) review documented petitions in the order that they are determined ready for review