If Mamdani is borrowing money from the state of NY to balance his city budget, then the state will need to raise taxes to get the money back or they'll have a deficit of funds.
Since the tax payers who fund the bulk of everything are being ran out of the state, then they're most likely expecting to somehow get those funds from us, the rest of the United States.
What are your thoughts on just evicting the state of NY from the union and being done with the whole state? No more Mandami! No more NY! Or as they say in Tokyo, Syonara NY!