The National Rifle Association reportedly advised its members against participating in a study released this week that shows a majority of gun sellers want tougher background checks for gun buyers. The NRA apparently was unaware that the University of California professor behind the study - himself an NRA member - received the email discrediting his research. Garen Wintemute, director of the UC Davis Violence Prevention Research Program, conducted a survey of 1,601... (GunPolicy.org)