Traci Kornak, the former treasurer of the Michigan Democratic Party, was hauled into probate court this week, suspected of embezzling from her ward, a brain-damaged elderly woman. I caught Kornak feasting on the woman’s finances nearly four years ago and have written many stories about it since. I’ve made TV appearances. I even lost my newspaper job over it. After my first story was published, Attorney General Dana Nessel, a close friend of Kornak, opened a superficial investigation that was no investigation at all. Her detectives made a few cursory phone calls before Nessel prodded them into shutting down the...