Copyright Government of Botswana 
National Assembly.  (6) A person attending the proceedings of the Ntlo ya Dikgosi by virtue of the provisions of subsection (3) or (4) of this section shall be entitled to take part in the proceedings of the Ntlo ya Dikgosi relating to the matter in respect of which he or she attends as if he or she were a Member of the Ntlo ya Dikgosi:  Provided that he or she shall not be entitled to vote in the Ntlo ya Dikgosi. PART IV Powers of Parliament (ss 86-89) 86. Legislative powers   Subject to the provisions of this Constitution, Parliament shall have power to make laws for the peace, order and good government of Botswana. 87. Mode of exercising legislative powers   (1) Subject to the provisions of section 89(4) of this Constitution the power of Parliament to make laws shall be exercised by Bills passed by the National Assembly, after reference in the cases specified in section 88(2) of this Constitution to the Ntlo ya Dikgosi, and assented to by the President.  (2) When a Bill is presented to the President for assent he or she shall either assent or withhold his or her assent.  (3) Where the President withholds his or her assent to a Bill, the Bill shall be returned to the National Assembly.  (4) If where the President withholds his or her assent to a Bill the Assembly resolves within six months of the Bill being returned to it that the Bill should again be presented for assent, the President shall assent to the Bill within 21 days of its being again presented to him or her, unless he or she sooner dissolves Parliament.  (5) When a Bill that has been duly passed and presented for assent is assented to in accordance with the provisions of this Constitution it shall become law and the President shall thereupon cause it to be published in the Gazette as a law.  (6) No law made by Parliament shall come into operation until it has been published in the Gazette, but Parliament may postpone the coming into operation of any such law and may make laws with retrospective effect.  (7) All laws made by Parliament shall be styled "Acts" and the words of enactment shall be "enacted by the Parliament of Botswana". 88. Introduction of Bills   (1) Except upon the recommendation of the President, which recommendation may be signified by the Vice-President or a Minister, the National Assembly shall not-  (a) proceed upon any Bill (including any amendment to a Bill) that, in the opinion of the person presiding, makes provision for any of the following purposes-   (i) for the imposition of taxation or the alteration of taxation otherwise than by reduction;   (ii) for the imposition of any charge upon the revenues or other funds of Botswana or the alteration of any such charge otherwise than by reduction;   (iii) for the payment, issue or withdrawal from any public fund of Botswana of any moneys not charged thereon or any increase in the amount of such payment, issue or withdrawal; or   (iv) for the composition or remission of any debt to the Government of Botswana;  (b) proceed upon any motion (including any amendment to a motion) the effect of which, in the opinion of the person presiding, would be to make provision for any of those purposes.  (2) The National Assembly shall not proceed upon any Bill (including any amendment to a Bill) that, in the opinion of the person presiding, would, if enacted, alter