State in accordance with law made by Parliament; all rights and privileges including the provision of palaces and residences for official and personal use; and exemption from taxation on the royal annuity and properties. The Constitution also limits the membership of the royal family to reigning and past Monarchs, their Queens and their Royal Children born of lawful marriage. Article 2 Section 26 states that Parliament may make no laws nor exercise its powers to amend the provisions regarding the monarchy and Bhutan's government as a "Democratic Constitutional Monarchy" except through a national referendum. Royal prerogatives Under the Constitution, the King, in exercise of his Royal Prerogatives (and as Head of State), promotes goodwill and good relations with other countries by receiving state guests and undertaking state visits to other countries. The King may also award titles, decorations, dar for Lhengye and Nyi-Kyelma (conferring a red scarf of rank and honour with the title of "Dasho") in accordance with tradition and custom. Also among the Royal Prerogatives are the grants of citizenship, amnesty, pardon and reduction of sentences; and land "kidu" and other "kidus" (benefits). The King may, by Royal Prerogative, command bills and other measures to be introduced in Parliament. Furthermore, bills of Parliament are ultimately subject to veto and modification by the King, however he must assent to bills resubmitted after joint sitting and deliberation. The King may also exercise powers "relating to matters which are not provided for under this Constitution or other laws." Succession and retirement The Constitution establishes the law of succession of the Golden Throne of Bhutan. Under this Section, title to the throne vests in the legitimate descendants of King Ugyen Wangchuck, enshrined on December 17, 1907. Title may pass only to children born of lawful marriage, by hereditary succession to direct lineal descendants in order of seniority upon the abdication or demise of the King. Article 2 Section 6 provides that upon reaching age 65, the King must retire (abdicate) in favor of the Crown Prince or Crown Princess, provided the royal heir has reached age 21. There is a stated preference that a prince take precedence over a princess, however this is subject to the exception that if there are "shortcomings in the elder prince, it is the sacred duty of the King to select and proclaim the most capable prince or princess as heir to the Throne." Title to the