Local Government Code of 1991
Section 499. Purpose of Organization. - There shall be an organization of all cities to be known as the League of Cities for the primary purpose of ventilating, articulating and crystallizing issues affecting city government administration, and securing, through proper and legal means, solutions thereto.
The league may form chapters at the provincial level for the component cities of a province. Highly-urbanized cities may also form a chapter of the League. The National League shall be composed of the presidents of the league of highly-urbanized cities and the presidents of the provincial chapters of the league of component cities.