Rep. Luis Arroyo, D-Chicago, was arrested by the FBI on Oct. 28, 2019, for attempting to bribe a state senator. House Speaker Michael Madigan, who was under investigation himself, called on Arroyo to resign that same day. The next day, Rep. Emanuel “Chris” Welch, D-Hillside, was one of three House Democrats who signed a petition to automatically trigger the creation of a Special Investigating Committee. Welch and the two others included the sworn federal criminal complaint against Arroyo as evid