Malcolm Stuckey was pulling up in a burgundy Pontiac Grand Prix to his friend’s birthday party in Chicago’s once-prosperous Englewood neighborhood when a bullet fired from a gun, bought 840 miles away in Mississippi, tore into his brain. States such as Mississippi are supplying hundreds of firearms originally bought from licensed shops and, eventually, illegally transported north. What helps to feed that pipeline are lax Mississippi gun laws that allow almost anyone to sell a firearm to any other state resident, making it difficult to track those weapons or prevent them from being trafficked to locales far outside of the South.