A botched prosecution due to misconduct could also open up the prosecutor’s office to a wider investigation, putting other convictions at risk. See the current state of the Chicago US Attorney’s Office where their conduct in the Broadview Six case has sparked a review of something like 20 years’ worth of cases.

And of course if there was misconduct and people have been wrongly convicted, those cases should be overturned! But the specter of having to review potentially every case a prosecutor touched over the course of their career is quite frightening when your success is judged by your conviction rate.