The state university shall be under the management and control of a board of trustees, which shall consist of two members from each congressional district in the state, an additional member from the congressional district which includes the site of the first campus of the university, the superintendent of education, and the governor, who shall be ex officio president of the board. The members of the board of trustees as now constituted shall hold office until their respective terms expire under existing law, and until their successors shall be elected and confirmed as hereinafter required. The additional trustees provided for by this amendment shall be elected by the existing members of the board, and confirmed by the senate in the manner provided below, for initial terms of not more than six years established by the board so that one term shall expire each three years in each congressional district. Successors to the terms of the existing and additional trustees shall hold office for a term of six years, and shall not serve more than three consecutive full six-year terms on the board; provided however that a trustee shall retire from the board and vacate office at the annual meeting of the board following that trustee's seventieth birthday. Election of additional and successor trustees or of trustees to fill any vacancy created by the expiration of a term or by the death or resignation of any member or from any other cause shall be by the remaining members of the board by secret ballot; provided, that any trustee so elected shall hold office from the date of election until confirmation or rejection by the senate, and, if confirmed, until the expiration of the term for which elected, and until a successor is elected. At every meeting of the legislature the superintendent of education shall certify to the senate the names of all who shall have been so elected since the last session of the legislature, and the senate shall confirm or reject them, as it shall determine is for the best interest of the university. If it rejects the names of any members, it shall thereupon elect trustees in the stead of those rejected. No trustee shall receive any pay or emolument other than his actual expenses incurred in the discharge of his duties as such. Upon the vacation of office by a trustee, the board, if it desires, may bestow upon a trustee the honorary title of trustee emeritus, but such status shall confer no responsibilities, duties, rights, or privileges as such.