been passed by that other House and agreement has been reached between the two Houses on any amendment made on it. (4) Where a bill is presented to the President for assent, he shall within thirty days thereof signify that he assents or that he withholds assent. (5) Where the President withholds his assent and the bill is again passed by each House by two-thirds majority, the bill shall become law and the assent of the President shall not be required. 59. (1) The provisions of this section shall apply to: (a) an appropriation bill or a supplementary appropriation bill, including any other bill for the payment, issue or withdrawal from the Consolidated Revenue Fund or any other public fund of the Federation of any money charged thereon or any alteration in the amount of such a payment, issue or withdrawal; and (b) a bill for the imposition of or increase in any tax, duty or fee or any reduction, withdrawal or cancellation thereof. (2) Where a bill to which this section applies is passed by one of the Houses of the National Assembly but is not passed by the other House within a period of two months from the commencement of a financial year, the President of the Senate shall within fourteen days thereafter arrange for and convene a meeting of the joint finance committee to examine the bill with a view to resolving the differences between the two Houses. (3) Where the joint finance committee fails to resolve such differences, then the bill shall be presented to the National Assembly sitting at a joint meeting, and if the bill is passed at such joint meeting, it shall be presented to the President for assent. (4) Where the President, within thirty days after the presentation of the bill to him, fails to signify his assent or where he withholds assent, then the bill shall again be presented to the National Assembly sitting at a joint meeting, and if passed by twothirds majority of members of both houses at such joint meeting, the bill shall become law and the assent of the President shall not be required. (5) In this section, "joint finance committee" refers to the joint committee of the National Assembly on finance established pursuant to section 62(3) of this Constitution. 60. Subject to the provisions of this Constitution, the Senate or the House of Representatives shall have power to regulate its own procedure, including the procedure for summoning and recess of the House. 61. The Senate or the House of Representatives may act notwithstanding any vacancy in its membership, and the presence or participation of any person not entitled to be present at or to participate in the proceedings of the House shall not invalidate those proceedings. 62. (1) The Senate or the House of Representatives may appoint a committee of its members for such special or general purpose as in its opinion would be better regulated and managed by means of such a committee, and may by resolution, regulation or otherwise, as it thinks fit, delegate any functions exercisable by it to any such committee. (2) The number of members of a committee appointed under this section, their terms of office and quorum shall be fixed by the House appointing it. (3) The Senate and the House of Representatives shall appoint a joint committee on finance consisting of an equal number of persons appointed by each House and may appoint any other joint committee under the provisions of this section.