Why did acting U.S. Attorney Danielle Sassoon resign from the Southern District of New York?

Danielle Sassoon resigned because she refused to comply with Department of Justice directives to drop corruption charges against New York City Mayor Eric Adams. In her letter to Attorney General Bondi, she refuted the reasoning behind the dismissal order, arguing that whether the case proceeded to trial or was dismissed without prejudice (allowing it to be brought again after the November election) made no meaningful difference. Sassoon stood on ethical principles, rejecting what she perceived as political pressure that would have placed the mayor under administrative monitoring and control, compromising her prosecutorial integrity and constitutional oath.