The case was Baker v. Carr, 369 U.S. 186 (1962). It would take the equivalent of a legal and revolution to change it.
My friend tells me more directly
relevant is Reynolds v Sims (1964).
With the GOP owning most state houses,
governorships, plus the House and Senate
it doesn’t have to be a pipe dream. However,
just because there is a constitutional change giving
the states the authority to decide how to
address their own constitutions it doesn’t
mean California will change anything. With
the illegal alien situation all conservatives
everywhere might want to take note.