their competence. The rules concerning the grouping of two or more Municipalities into districts shall be determined by law.
Article 171: When two or more Municipalities belonging to the same federal organ have economic, social and physical relations that give the group the characteristics of a metropolitan area, they may organize themselves as metropolitan districts. The organic law enacted for the purpose shall guarantee the democratic and participatory character of the metropolitan government and shall establish its functional competence, as well as its tax, financial and control regime. It shall also ensure that the Municipalities have adequate participation in the entities of the metropolitan government, and shall indicate the manner in which the public consultations that are to decide upon affiliation of the Municipalities with the metropolitan district.
Various regimes may be established by law for the organization, governance and administration of the metropolitan district, taking into account population conditions, economic and social development, geographical location and other factors of importance. In all cases, the delegation of competence for each metropolitan district shall take into account these conditions.
Article 172: The state Legislative Council, after a favorable decision by public consultation of the affected population, shall define the boundaries of the metropolitan district and shall organize the same in accordance with the provisions of the national organic law, determining which metropolitan powers are to be assumed by the governmental organs of the pertinent metropolitan district.
When the Municipalities wishing to form a metropolitan district belong to different federal entities, the creation and organization of the same shall be the responsibility of the National Assembly.
Article 173: A Municipality shall have the power to create parishes on such terms as may be determined by law. The legislation enacted to implement constitutional principles relating to the organization of Municipalities shall establish the premises and conditions for the