Why is Mayor Eric Adams' criminal case being considered for dismissal?

According to Aaron Kacherski, the Justice Department is seeking dismissal of the criminal case against Mayor Eric Adams, but their reasoning has raised questions. The Justice Department indicated the dismissal isn't based on evidence or the mayor's guilt or innocence, but rather appears politically motivated - specifically to free Adams to support the president's immigration agenda. This reasoning may prompt further scrutiny from the judge overseeing the case, who could have questions about the legitimacy of dismissing criminal charges on political rather than evidentiary grounds.