AP Photo

Mark Rosenberg and his colleagues were forced to stop their work at the point of a gun — or at least at the insistence of National Rifle Association.

In 1996, Rosenberg was director of the National Center for Injury Prevention and Control (NCIPC). It was then that Congress, at the behest of the National Rifle Association, stopped federally funded gun-related research by the Centers for Disease Control and Prevention (CDC), which includes NCIPC.