; and (ii) the reasons for each applicable Bureau office not meeting any applicable deadlines; and (B) the length of time needed by each applicable Bureau office during the most recent calendar year to provide the notices required under subsection (b)(1). (2) Requirement In submitting the report required under paragraph (1), the Director shall maintain the confidentiality of personally identifiable information of the parties involved in requesting the completion of residential leasehold mortgage packages, business leasehold mortgage packages, land mortgage packages, and right-of-way document packages (including any corresponding first certified title status reports and subsequent certified title status reports). (f) GAO study Not later than 1 year after the date of enactment of this Act, the Comptroller General of the United States shall submit to the Committee on Indian Affairs of the Senate and the Committee on Natural Resources of the House of Representatives a report that includes— (1) an evaluation of the need for residential leasehold mortgage packages, business leasehold mortgage packages, land mortgage packages, and right-of-way document packages of each Indian Tribe to be digitized for the purpose of streamlining and expediting the completion of mortgage packages for residential mortgages on Indian land (including the corresponding first certified title status reports and subsequent certified title status reports)