Operation greylord was corruption investigation which took place in:

It was a Friday, and a group of lawyers--some prosecutors, some defense attorneys--had gathered in a Loop hotel on this day for a bachelor party. But the celebrating stopped when the television news broke this stunning story: For three years, the FBI had been running an undercover operation aimed at Cook County's court system. It featured at least one undercover operative and a listening device in a judge's chambers. One lawyer in the room--Terrence Hake--was not surprised by the news. Disgusted with the corruption that permeated the Cook County court system, he had become the FBI's mole in its unprecedented investigation of judicial corruption. First as a prosecutor and later as a defense lawyer, Hake had burrowed into the dark side of justice, handing out bribes to fix cases concocted by the FBI.Four months after the Greylord investigation was revealed, the first indictments were announced, naming two judges, a former judge, three attorneys, two court clerks and a police officer. "I believe this will be viewed as one of the most comprehensive, intricate and difficult undercover projects ever undertaken by a law-enforcement agency," U.S. Atty. Dan Webb said in announcing those charges. The allegations ranged from fixing drunken-driving cases to more serious felony charges. One lawyer was caught on tape bragging that "even a murder case can be fixed if the judge is given something to hang his hat on." By the end of the decade, nearly 100 people had been indicted, and all but a handful were convicted. Of the 17 judges indicted, 15 were convicted. The tally of convictions included 50 lawyers, as well as court clerks, police officers and sheriff's deputies. Greylord was not the first federal investigation of public corruption in Chicago, but it was a watershed in its use of eavesdropping devices and a mole to obtain evidence instead of relying on wrongdoers to become government informants.

Over the next several years, federal authorities launched similar investigations targeted at corruption in Chicago's City Hall (including Operations Incubator and Silver Shovel), other governmental bodies (Operation Lantern) and organized crime (Operation Gambat and Safebet). Scores of public officials, including aldermen, judges and legislators, were convicted.

Operation Greylord is regarded as the largest and most successful investigation into courtroom misconduct in the history of the American judiciary.

The target of this Federal investigation was the Cook Country (Chicago and suburbs) court system - the largest system of its kind in the United States. The success of the investigation is attributed to the fact that it was a typical 'sting' operation in which the Federal Bureau of Investigation (FBI) fabricated cases, tape recorded conversations, tapped telephones, and planted a bug in the chambers of at least one judge. At this time, the consequences of Greylord continue to shake the system. Over 60 individuals have been convicted, two committed suicide, and others are still awaiting indictment. Never before has the legal profession in Chicago been more humiliated. And at no other time has there been a greater need to restore the public's faith in both the bench and the bar. To that end, important recommendations have been made (some of which have already been implemented) to reform the administration of justice in Cook County, adopt new ethical requirements for judges and attorneys, and allow merit selection of judges in Illinois. As in all corruption cases, there is at least one important lesson to be derived from Greylord: Never say, 'It can't happen here.' (Author abstract)