Daniel K. "Dan" Webb is an Illinois attorney known for his involvement in high-profile litigation cases and his connections to former Illinois governor Gov. James R. Thompson. He is the chairman of the Winston & Strawn law firm and is the former United States Attorney for the Northern District of Illinois, serving from 1981 to 1985. From 1970 to 1976 he was an assistant U.S. Attorney in the Special Prosecutions Division of the U.S. Attorney's office of the Northern District of Illinois. In 1990 Webb received international attention for his prosecution of retired Admiral John Poindexter in the Iran–Contra affair. However the convictions were overturned on appeal
As a federal prosecutor in Illinois, Webb gained fame for his lead role in the Operation Greylord investigations into judicial corruption in Cook County, Illinois. After leaving public practice, his focus was on defense, especially of white-collar crime and allegations of corporate malfeasance. He was lead defense trial counsel for General Electric in a price-fixing case, represented Microsoft in antitrust litigation, and represented Philip Morris in its tobacco-related litigation.
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