Suppose that J Edgar Hoover was severely discredited in late 1920-early 1921. Never mind if the scandal is true or manufactured, but he ends up widely distrusted and either resigns or is fired from his governmental position.
If this happening is ASB, then what if he has an automobile accident or gets run down by a streetcar and killed?
Would the FBI be more law abiding, or would the same abuses be likely to crop up anyway? Hoover abused his power a lot!