; and (III) shall be allowed travel expenses, including per diem in lieu of subsistence, at rates authorized for employees of agencies under subchapter I of chapter 57 of title 5, United States Code, while away from their homes or regular places of business in the performance of services for the Fiscal Commission. (ii) Members of Congress Each member of the Fiscal Commission who is a Member of the Senate or the House of Representatives shall serve without compensation in addition to the compensation received for the services of the member as a Member of the Senate or the House of Representatives. (3) Administration (A) In general To enable the Fiscal Commission to exercise the powers, functions, and duties of the Fiscal Commission, there are authorized to be disbursed by the Senate the actual and necessary expenses of the Fiscal Commission approved by the staff director of the Fiscal Commission, subject to the rules and regulations of the Senate. (B) Quorum A majority of the members of the Fiscal Commission who are Members of the Senate or the House of Representatives, not fewer than 3 of whom were appointed to the Fiscal Commission by a Member of the Senate or the House of Representatives who caucuses with the same political party as the President and not fewer than 3 of whom were appointed to the Fiscal Commission by a Member of the Senate or the House of Representatives who caucuses with the opposite political party as the President, shall constitute a quorum. (C) Voting (i) In general Only members of the Fiscal Commission who are Members of the Senate or the House of Representatives may vote on any matter. An outside expert serving as a member of the Fiscal Commission shall be a nonvoting member. (ii) Proxy voting No proxy voting shall be allowed on behalf of any member of the Fiscal Commission on any matter. (iii) Congressional Budget Office estimates (I) In general The Director of the Congressional Budget Office shall, with respect to the implementing bill of the Fiscal Commission described in subsection