Ill. Sup. Ct. R. 2.15
COMMENTS
[1] A judge having knowledge of misconduct committed by another judge or an attorney must take appropriate action to address the misconduct. Paragraphs (A) and (B) impose an obligation on the judge to report to the appropriate disciplinary authority the known misconduct of another judge or a lawyer that raises a substantial question regarding the honesty, trustworthiness, or fitness of that judge or lawyer. Ignoring or denying known misconduct among one's judicial colleagues or members of the legal profession undermines a judge's responsibility to participate in efforts to ensure public respect for the justice system. This Rule limits the reporting obligation to those offenses that an independent judiciary must vigorously endeavor to prevent.
[2] A judge having knowledge of a violation of the Code or the Illinois Rules of Professional Conduct of 2010 that does not raise a substantial question regarding honesty, trustworthiness, or fitness of a judge or lawyer, respectively, is required to take appropriate action under paragraphs (C) or (D). Appropriate action may include, but is not limited to, communicating directly with the judge who may have violated this Code, communicating with a supervising judge, or reporting the suspected violation to the appropriate authority or other agency or body. Similarly, actions to be taken in response to information indicating that a lawyer has committed a violation of the Illinois Rules of Professional Conduct of 2010 may include but are not limited to communicating directly with the lawyer who may have committed the violation when communicating is consistent with Rule 2. 9 ("Ex Parte Communications") and other provisions of this Code, initiating contempt proceedings, or reporting the suspected violation to the appropriate authority. In both cases, the Rule does not preclude a judge from taking or initiating more than a single appropriate disciplinary measure.