The Board may, by rule, conduct and require a program of inspection in accordance with paragraph (1), on a basis to be determined by the Board, of registered public accounting firms that provide one or more audit reports for a broker or dealer. The Board, in establishing such a program, may allow for differentiation among classes of brokers and dealers, as appropriate.

If the Board determines to establish a program of inspection pursuant to subparagraph (A), the Board shall consider in establishing any inspection schedules whether differing schedules would be appropriate with respect to registered public accounting firms that issue audit reports only for one or more brokers or dealers that do not receive, handle, or hold customer securities or cash or are not a member of the Securities Investor Protection Corporation.

Any rules of the Board pursuant to this paragraph shall be subject to prior approval by the Commission pursuant to section 7217(b) of this title before the rules become effective, including an opportunity for public notice and comment.

Notwithstanding anything to the contrary in section 7212 of this title, a public accounting firm shall not be required to register with the Board if the public accounting firm is exempt from the inspection program which may be established by the Board under subparagraph (A).