The Customs and Border Protection agency has spent a year reviewing 67 cases of border patrol officers using deadly force. The agency now says it won’t be taking any disciplinary or legal action against officers in any of those cases. The internal review was launched after a blistering report by an independent group called the Police Executive Research Forum. That report found that Border Patrol officers’ use of force was often unjustified. It also found a “lack of diligence” in the agency’s investigations into deadly force cases. So why no punishments?