investigating doesn't restore anything. You know what would restore integrity? consequences.
get a forensic accountant to dive into the finances of every one of these ghouls. As well as Including dependents, spouses, business relationships at the slightest hint of suspicion that they have been used as cover up. Innumerate each and every piece of evidence of infraction from bylaw infraction to breach of trust to being anything less that scrupulous paying taxes. Each instance its own charge and the details put into the public record. Punitive damages far larger than the value of their thefts. And they all have restrictions on engaging with politics of business for the next 20 years. Heavy fines for the smallest repeat infractions.