The measure in question has been around for 28 years and is considered among the strictest bans on handguns in the nation. But in the wake of the Supreme Court's decision last year tossing out a Washington, D.C., gun-control law, gun-rights supporters decided to challenge the Chicago ban.
The argument before the court centers on the Second Amendment's right to bear arms but could hinge on arguments separating Washington -- a federally controlled city -- from jurisdiction under state or local control and whether those entities can place such restrictions.
Chicago Mayor Richard Daley Monday said, "We've turned our backs on common-sense gun laws in America and we continuously, unfortunately, continue shooting each other on a daily basis."
Gun-rights supporters claim lifting the ban would make Chicago safer from gun violence, taking the stance that if people have a gun, or even may have a gun, outlaws will be less likely to confront them. Those who support the ban say that additional guns among the public will mean more shootings, both accidental and intentional.