The mayor is pushing a state and federal ban on semi-automatic assault weapons and military-grade rifles. The mayor wants to make it a crime to sell or keep high-capacity magazines and ammunition, like those used during the Columbine and Virginia Tech shootings. He says this legislation could have saved lives at NIU if it had been approved earlier.
But the mayor's critics say none of the bills could have prevented the tragedy.
"More and more people getting killed and injured every year. So I think it's something that America has to come to grips with if we're supposed to lead the world as a government that will lead," Daley said.
An attorney for gun owners and advocate groups tells ABC7 the problem is most of the people who use guns illegally don't follow laws in the first place.