Four years after a Smith & Wesson .45-caliber semi-automatic handgun was used to kill an off-duty Chicago police officer, the Mississippi pawnshop owner who sold the gun in a straw purchase has agreed to concessions that authorities hope will curb similar illegal gun deals. The concession to alert authorities about customers who buy multiple handguns, beyond what is required by law, was reached in a federal lawsuit in Mississippi over the slaying of Officer Thomas Wortham IV, attorneys for the Wortham family said. He was an Army National Guard member who had served in Iraq and who — just days...
