According to a National Institute of Justice (NIJ) report obtained by USA TODAY, the mishandling of witnesses during the suspect identification process is the single greatest cause of wrongful convictions in the U.S. The majority of law enforcement agencies have not adopted federal guidelines that have long been in existence.
As reported by USA Today and published by Cincinnati.com on June 11, ignoring eyewitness rules results in wrongful convictions. A total of 75 percent of wrongful convictions which are later overturned through DNA testing are the fault of flaws in the eyewitness identification process. More than 300 convictions have been overturned through DNA testing since 1989.