705 ILCS 205/6

No person, whose name is not on such roll, with the day and year when the same was written thereon, shall be suffered or admitted to practice as an attorney or counselor at law in any court within this State, and the justices of the supreme court, in open court, shall have power at their discretion to strike the name of any attorney or counsel at law from the roll for malconduct in his office; and any judge of a Circuit Court shall, for like cause, have power to suspend any attorney or counselor at law from practice in the court over which he presides, during such time as he may deem proper, subject to the right of appeal as in other civil cases.