Telephone giant AT&T has been subpoenaed by federal prosecutors amid a widening criminal probe encircling House Speaker Michael Madigan’s political operation, a source with knowledge of the investigation told the Chicago Tribune.
https://www.chicagotribune.com/news/criminal-justice/ct-michael-madigan-att-federal-lobbying-investigation-20200723-ldws3ytverb6hfpknx6n5mjktq-story.html