That been the excuse given by Chicago for at least two decades.

80% of the guns used in solved crimes in Chicago are contraband, stolen from lawfully owned guns in Illinois and other states.

The shootings in Chicago that result in deaths are over 80% gang shootings. These are battle between criminals over drug, prostitution, or other crime turf.

Rahm Emanuel, btw, disbanded the Chicago anti-gang unit a year or so ago.

In addition the Chicago police force has been corrupt for at least thirty years.

So, no, the problem is not Indiana. The problem is in Chicago and it's 100% homegrown.