Former Chicago Alderman Daniel Solis testifies against ex-Illinois Speaker Michael Madigan in a corruption trial.

Former Chicago Alderman Daniel Solis, now an FBI informant, is testifying in the corruption trial of ex-Illinois House Speaker Michael Madigan. Solis spent over two years secretly recording Madigan, alleging schemes to use official duties to benefit his private law firm. Solis faces bribery charges but has a deal with prosecutors to have them dropped next year. His testimony is pivotal in the prosecution's case against Madigan, who faces bribery, racketeering, and official misconduct charges.