"In the wealthiest city in the richest country in the world, no one should have to wonder how they'll afford the food they need to feed themselves or their families," Mamdani wrote.

"Margins in grocery are 2-3% pre-tax margins so reducing selling prices by 30% across the board will guarantee that the stores will lose money on every sale," O'Leary wrote.

"Who will pay for those losses?

You the NYC taxpayers." Margins in grocery are 2-3% pre-tax margins so reducing selling prices by 30% across the board will guarantee that the stores will lose money on every sale.

Who will pay for those losses?