CHICAGO—A father will ask a judge Monday to dismiss his case in which authorities say he helped his son obtain a gun license three years before the younger man fatally shot seven people at a 2022 Fourth of July parade in suburban Chicago.
Illinois prosecutors charged Robert Crimo Jr. under an unconstitutionally vague law, his lawyers are expected to argue at a hearing in Waukegan, north of Highland Park where the shooting occurred. If Lake County Judge George Strickland allows the case to proceed, Mr. Crimo Jr.’s bench trial would start Nov. 6.