; (2) may delegate to hearing examiners any powers necessary to conduct hearings and proceedings, take sworn testimony, obtain and make a record of pertinent information, make findings of probable cause and issue subpoenas for witnesses or evidence in parole revocation proceedings, and recommend disposition of any matters enumerated in subsection (b), except that any such findings or recommendations shall be based upon the concurrence of not less than 2 hearing examiners; (3) may delegate authority to conduct hearings held under section 3643 to any officer or employee of the executive or judicial branch of Federal or State government; (4) may review, or may delegate to the National Appeals Board the power to review, any decision made under paragraph (1), which shall be reaffirmed, modified, or reversed not later than 30 days after the date the decision is rendered; and (5) shall provide written notice to the individual to whom a decision described in paragraph (4) applies of the Commission's actions with respect thereto and the reasons for such actions. (d) Policymaking Except as otherwise provided by law, any action taken by the Commission under subsection (a) shall be taken by a majority vote of all individuals currently holding office as members of the Commission which shall maintain and make available for public inspection a record of the final vote of each member on statements of policy and interpretations adopted by it. In so acting, each Commissioner shall have equal responsibility and authority, shall have full access to all information relating to the performance of such duties and responsibilities, and shall have 1 vote. 3633. Powers and duties of the Chairperson (a) In general The Chairperson shall— (1) convene and preside at meetings of the Commission under section 3632 and such additional meetings of the Commission as the Chairperson may call or as may be requested in writing by at least 3 Commissioners