Chicago's Inspector General Debora Witzburg accused the Johnson and Lightfoot administrations of interfering with IG investigations. The allegations were disclosed in a memo to the Chicago City Council, which did not mention the mayors by name. Witzburg highlighted practices that hindered the effectiveness and independence of investigations.

The investigative roadblocks outlined by Inspector General Deborah Witzburg include demands by the Law Department to sit in on sensitive interviews that might embarrass the mayor and delaying the release of sensitive documents.