Phil Houston is CEO of QVerity, a training and consulting company specializing in detecting deception by employing a model he developed while at the Central Intelligence Agency. He has conducted thousands of interviews and interrogations for the CIA and other federal agencies. His colleague Don Tennant contributed to this report. When U.S. Attorney General Loretta Lynch made her appearance this week on Fox News Sunday, she was asked about the government’s decision to put Orlando nightclub killer Omar Mateen on a terrorist watch list in 2013, only to remove him from the list the following year. The deceptive behavior exhibited...