1987 Constitution of the Philippines
Section 18. There shall be a Commission on Appointments consisting of the President of the Senate, as ex officio Chairman, twelve Senators, and twelve Members of the House of Representatives, elected by each House on the basis of proportional representation from the political parties and parties or organizations registered under the party-list system represented therein. The chairman of the Commission shall not vote, except in case of a tie. The Commission shall act on all appointments submitted to it within thirty session days of the Congress from their submission. The Commission shall rule by a majority vote of all the Members.