; (2) the provision or rule is unnecessary or unwarranted in order to promote the safety and soundness of the bank holding company; and (3) the exemption is necessary, appropriate, or consistent with the public interest. (e) Indexation of asset threshold The asset threshold identified in subsection (b) shall be increased annually at a percentage equal to the percentage change in the total aggregate assets of insured depository institutions for each 12-month period ending in December of each year, rounded to the nearest $10,000,000. . (c) Exemptive authority for savings and loan holding companies and mutual holding companies Section 10 of the Home Owners’ Loan Act ( 12 U.S.C. 1467a ) is amended by adding at the end the following: (u) Exemptive authority (1) Definitions In this subsection— (A) the term insured depository institution has the meaning given the term in section 3(c) of the Federal Deposit Insurance Act ( 12 U.S.C. 1813(c) ); and (B) the term mutual holding company has the meaning given the term in subsection (o)(10)(A). (2) Exemption Notwithstanding any other provision of law, the Board, after considering the factors in paragraph (4), may exempt by rule any savings and loan holding company or any mutual holding company having less than $10,000,000,000 in total assets from— (A) any provision of this Act; (B) any rule promulgated under this Act; or (C) any rule promulgated under any other Act that confers authority on the Board. (3) Conditions The Board may impose conditions on an exemption granted under paragraph (2). (4) Factors to consider In granting an exemption under paragraph (2), the Board shall consider the extent to which— (A) the provision or rule would impose an unnecessary or undue burden or cost on the savings and loan holding company or the mutual holding company; (B) the provision or rule is unnecessary or unwarranted in order to promote the safety and soundness of the savings and loan holding company or the mutual holding company