[devnulloverflow]

> Does anyone understand how such a seemingly unconstitutional law could get passed ?

Things get passed because politicians vote for them. They might or might not listen to legal advice about their constitutionality before voting.

It's possible there is something we don't know that makes the rule constitutional. Other possibilities are:

1. The councilors who voted for it don't care, their strategy is to try to get away with anything and let the courts uphold the constitution.

2. The councilors actively want the courts to strike it down to generate a talking point at the next election.

There are plenty of voters who will reward both strategies, and they are over-represented among the politically active people.