Bill of rights for local governments
Section 1. Effective local self-government and intergovernmental cooperation are purposes of the people of the state. In furtherance thereof, local governments shall have the following rights, powers, privileges and immunities in addition to those granted by other provisions of this constitution:
(d) No local government or any part of the territory thereof shall be annexed to another until the people, if any, of the territory proposed to be annexed shall have consented thereto by majority vote on a referendum and until the governing board of each local government, the area of which is affected, shall have consented thereto upon the basis of a determination that the annexation is in the over-all public interest. The consent of the governing board of a county shall be required only where a boundary of the county is affected. On or before July first, nineteen hundred sixty-four, the legislature shall provide, where such consent of a governing board is not granted, for adjudication and determination, on the law and the facts, in a proceeding initiated in the supreme court, of the issue of whether the annexation is in the over-all public interest.