Lightfoot to address resignation at press conference Monday By Alexis McAdams, ABC7 News Chicago’s top attorney Mark Flessner has resigned after trying to block release of a video showing a botched Chicago police raid last year. Mayor Lori Lightfoot announced Sunday that she accepted the resignation of the corporation counsel effective immediately. Mayor Lightfoot will hold a press conference Monday afternoon to address the resignation. Lightfoot went on to thank Flessner for his service, but also said “I am committed to a full review of everything that occurred surrounding this incident, will take corrective action where appropriate, and will hold people accountable.”