WASHINGTON — Chief movie lobbyist Jack Valenti defended smoking in Hollywood films, but senators insisted the industry must do more to stop the practice. "I don't believe that whatever the director does ought to incite the intervention of the government in any form," Valenti, head of the Motion Picture Association of America, told a Senate Commerce Committee hearing yesterday. "I've got to tell you I believe it is his right to tell the story as he chooses to tell it." Some lawmakers were dissatisfied by his answers. A study last year found that teens who watch movies with smoking in...