Most states have fairly large and broad statutory prohibitions on the carrying of firearms into either courthouses in general or courtrooms in particular (click here for a list). Illinois’ current prohibition is on the broader side.
430 ILCS 66/65(a)(4) A [concealed carry] licensee under this Act shall not knowingly carry a firearm on or into…Any building designated for matters before a circuit court, appellate court, or the Supreme Court, or any building or portion of a building under the control of the Supreme Court.
SB 1637 as introduced, however, would change the equation in the state, allowing judges and prosecutors who have a concealed carry firearm license to in fact carry into the courthouse but not a courtroom. The judge or prosecutor seeking to enter into the courtroom would be required to put the weapon into a locker provided by the sheriff or, if the building was controlled by the judiciary, the presiding judge.
SB 1637 has been placed in the Senate Assignments Committee pending placement in a subject matter committee.