The Illinois Supreme Court interprets its supervisory authority broadly and holds that it is “unlimited in extent and hampered by no specific rules or means for its exercise.” Yet, historically, the court has used its supervisory powers only regarding issues brought to the court’s attention in petitions for leave to appeal (“PLAs”) where the court can order relief without full briefing, oral argument, or issuance of an opinion.
But recently, the court has been willing to exercise its supervisory power outside of the traditional context of PLAs. Examples include removing a judge for alleged judicial bias and misconduct, reinstating a summary judgment order vacated by the trial court on an improper basis, and ordering the appellate court to vacate an injunction.