; (4) by striking It shall be the duty of the Board of Trustees to— and inserting the following: (3) It shall be the duty of the Board of Trustees to— ; (5) by inserting after not less frequently than once each calendar year. the following: (2) (A) Public trustees shall be appointed as follows: (i) Two members (each member from a different political party) shall be appointed by the President pro tempore of the Senate with the advice of the Chairman and the Ranking Minority Member of the Senate Committee on Finance. At least one such member shall have demonstrated expertise relating to the Old-Age, Survivors, and Disability Insurance Program and at least one shall have demonstrated expertise relating to the Medicare program. (ii) Two members (each member from a different political party) shall be appointed by the Speaker of the House of Representatives, with the advice of the Chairman and the Ranking Minority Member of the House Committee on Ways and Means. At least one such member shall have demonstrated expertise relating to the Old-Age, Survivors, and Disability Insurance Program and at least one shall have demonstrated expertise relating to the Medicare program. (B) (i) Except as provided in clause (ii), each public trustee shall serve for a term beginning on the day after the expiration of the term of such member’s predecessor and expiring on the fourth April 1 occurring during such term (or, if later, the date on which the fourth report of the Board is issued under paragraph (2) during such term). (ii) Clause (i) shall be applied with respect to initial appointments under this subsection— (I) by substituting first for fourth each place it appears in clause (i) with respect to one of the public trustees appointed by the President pro tempore of the Senate (as designated by the President pro tempore of the Senate at the time of nomination)