Cities (or any other part of an existing state) can't secede without their state legislature's consent, though. It's the same reason conservative northern Calif

Cities (or any other part of an existing state) can't secede without their state legislature's consent, though. It's the same reason conservative northern Californians, or Staten Islanders can't have their own state and add more rural senators. Article IV of the US Constitution: New States may be admitted by the Congress into this Union; but no new State shall be formed or erected within the Jurisdiction of any other State; nor any State be formed by the Junction of two or more States, or Parts of States, without the Consent of the Legislatures of the States concerned as well as of the Congress.