How to geographically expand New York City ???

The examples of Lloydminster and Alsask on the Alberta/Saskatchewan border show that it's possible to have cities that span subnational boundaries.

As much as it pains me to say, Canada isn’t part of the US, and as such isn’t applicable.

From memory, it requires approval of congress and approval of all states involved (NJ and NY) to adjust state borders.

Yep, that’s the only way New York City could get land from New Jersey, so easy expansion would have to come elsewhere.
 
As much as it pains me to say, Canada isn’t part of the US, and as such isn’t applicable.
Because, of course, if it never happened in the US iOTL, it never could any any other TL?
Because examples of the very thing we're talking about DO exist in the closest existing culture and polity (Anglo, Federal, North American) are totally irrelevant, because the US is so exceptional that nothing that happens outside its borders counts?
Yep, that’s the only way New York City could get land from New Jersey, so easy expansion would have to come elsewhere.

No one is talking about New York State getting land from New Jersey. We are talking about New York City including land in NJ. That requires NO STATE BORDER ADJUSTMENTS!
 
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