; or (B) a registered lobbyist. (4) Conflicts of interest An individual appointed to the Commission shall disclose any financial gains from private sector employment conducted in support of United States counterterrorism policies, programs, or activities at any time since the September 11 attacks. (5) Deadline for appointment of commissioners Individuals appointed to the Commission shall be appointed not later than 30 days after the date of the enactment of this Act. (6) Period of appointment Each commissioner and the chairperson and vice-chairperson shall be appointed for the life of the Commission. (7) Vacancies Any vacancy in the Commission shall not affect its powers and duties and shall be filled in the same manner as the original appointment within 30 days of such vacancy occurring. (8) Compensation Commissioners and the chairperson and vice-chairperson shall serve without pay. (9) Travel expenses Commissioners and the chairperson and vice-chairperson shall receive travel expenses, including per diem in lieu of subsistence, in accordance with sections 5702 and 5703 of title 5, United States Code, while away from their homes or regular places of business in performance of services for the Commission. (e) Meetings (1) Initial meeting Not later than 30 days after the appointment of two-thirds of the members of the Commission, including the chairperson or vice-chairperson, the Commission shall hold an initial meeting to develop and implement a schedule for completion of the review and report required under paragraph. (2) Subsequent meetings The Commission shall meet at the call of the chairperson or a majority of commissioners. (3) Quorum Eight members shall constitute a quorum and members shall have the option to vote by proxy. (f) Consultation In conducting the review, assessment, and study required under this section, the Commission shall consult with relevant experts in the Federal Government, academia, law, civil society, and the private sector. (g) Powers of the Commission (1) Hearings and evidence For