A study of guns seized by Chicago police shows that suburban gun shops are a main source of guns used in crimes in the city.
The research shows that some 29 percent of the guns recovered on Chicago's streets between 2008 and the end of March were bought in the Cook County suburbs. Lake County, Ind., was the second largest source, accounting for 6 percent of the weapons, and other counties surrounding Chicago — including Lake County, Ill., and Will, DuPage and Kane counties — were also among the top 10 sources.
[. . .]
Ander said she was surprised by the percentage of guns that came from Illinois, rather than from neighboring states with comparatively relaxed gun laws. About 42 percent of the guns came from Illinois. Indiana ranked second, contributing 18 percent of the guns, and Wisconsin accounted for about 4 percent.
This is counterintuitive if you buy the argument that most of the guns in violent jurisdictions come from surrounding gun-happy states. But a combination of tough lows and high costs could make that argument true, or at least truer. I'm sure the folks in northwest Indiana would be more than happy to accomodate frustrated Cook Countians.