@CoffeeAddict
Time for a Constitutional Law lesson from this adjunct Law School Professor.
The case you cite is about a municipal government.
NOWHERE in the US Constitution are municipalities mentioned. The only DIVISIONS of Government are Federal and State. All rights not reserved to the Federal Government (Foreign relations, defense, issuing money, etc) are reserved to the States.
Municipalities are created by STATES and subject to the laws, regulations and State Constitutions. Municipalities can be abolished or have their borders redrawn by the State. My town lost 49 acres to an adjoining municipality 12 years ago to build a new high school.
State Constitutions and laws determine who may vote, the US Constitution only sets the minimum age (18).
In a state there are requirements set: Felons may lose their right to vote.
Local elections are tricky. I have to be a citizen legally registered to vote to vote in local elections to elect people to positions, but some towns that have budget referenda each year create voting folls for those elections open to all Taxpayers of the town.
In 2020 San Francisco dropped its Citizenship requirement for appointment to all Boards, Commissions and Advisory committees. None of these are legislative organizations and can’t institute/raise taxes.
My town’s charter restricts membership in these groups to electors (registered voters), but commissions, Boards and Advisory Committees of Constituent Agencies do not carry these rules. Thus The Student Athletics Advisory Committee of the Board of Education may have students appointed who are less than 18 years of age and not qualified electors.
You read a sensationalist headline about San Francisco, but nothing they did contravenes the US Constitution or gives a non-citizen a vote in an election for office