Former U.S. Rep. Carolyn McCarthy, who successfully ran for Congress in 1996 as a crusader for gun control after a mass shooting on a New York commuter train left her husband dead and her son severely wounded, has died.

Former U.S. Rep. Carolyn McCarthy, who successfully ran for Congress in 1996 as a crusader for gun control after a mass shooting on a New York commuter train left her husband dead and her son severely wounded, has died.