review of any alleged violation by a Member or employee of Congress of any law (including any regulation), rule, or other standard of conduct applicable to the conduct of such Member or employee in the performance of the duties, or the discharge of the responsibilities, of the Member or employee, along with a brief description of the specific matter. (2) Preliminary review (A) In general Not later than 7 business days after receipt of an authorization statement from 2 or more members of the Board under paragraph (1), the Board shall— (i) instruct the Office to initiate a preliminary review of the alleged violation