California Constitution Article XI § 2 – (a) The Legislature shall prescribe uniform procedure for city …
(a) The Legislature shall prescribe uniform procedure for city formation and provide for city powers.
(b) Except with approval by a majority of its electors voting on the question, a city may not be annexed to or consolidated into another.
(Sec. 2 added June 2, 1970, by Prop. 2. Res.Ch. 331, 1969.)