This image provided by the FBI shows part of the wanted poster for Monica Elfriede Witt. The former U.S. Air Force counterintelligence specialist who defected to Iran despite warnings from the FBI has been charged with revealing classified information to the Tehran government, including the code name and secret mission of a Pentagon program, prosecutors said Wednesday, Feb. 13, 2019. (FBI via AP)
FILE - In this Dec. 17, 2018, file photo, former FBI Director James Comey speaks to reporters on Capitol Hill Washington. The Justice Department’s inspector general says former FBI Director James Comey violated FBI policies in his handling of memos documenting private conversations with President Donald Trump. (AP Photo/J. Scott Applewhite, File)
This image provided by the FBI in a U.S. District Court filing in Washington on feb. 29, 2019, shows Mustafa al-Imam after his capture in October 2017. The interrogation of the Libyan militant accused of playing an instrumental role in the 2012 Benghazi attacks may be admitted at his trial next month, a federal judge ruled April 8, 2019. U.S. District Judge Christopher R. Cooper rejected defense attorneys claims that al-Imam had been suffering from mental trauma and seasickness in the days after his 2017 abduction in Libya. Al-Imam is scheduled to stand trial in May 2019 in Washington on murder and terrorism charges. (FBI via AP)
In this June 7, 2017 file photo, FBI acting director Andrew McCabe listens during a Senate Intelligence Committee hearing about the Foreign Intelligence Surveillance Act, on Capitol Hill in Washington, D.C. (AP Photo/Alex Brandon)
The early FBI probe of former Trump campaign chairman Paul Manafort's business activities in Ukraine ended for lack of evidence in 2014. The FBI renewed its investigation of Mr. Manafort in 2016. (Associated Press)
This undated photos released on Thursday, Sept. 27, 2018 by the FBI shows an FBI wanted poster of Greg Alyn Carlson. Carlson is wanted for allegedly committing an armed sexual assault in Los Angeles last year has been added to the FBI's list of Ten Most Wanted Fugitives. The FBI also announced Thursday a reward of up to $100,000 for information leading directly to the arrest of Carlson, who detectives believe is likely responsible for additional sexual assaults. (FBI via AP)
This undated photos released on Thursday, Sept. 27, 2018 by the FBI shows an FBI wanted poster of Greg Alyn Carlson. Carlson is wanted for allegedly committing an armed sexual assault in Los Angeles last year has been added to the FBI's list of Ten Most Wanted Fugitives. The FBI also announced Thursday a reward of up to $100,000 for information leading directly to the arrest of Carlson, who detectives believe is likely responsible for additional sexual assaults. (FBI via AP)
Acting FBI Director Andrew McCabe listens on Capitol Hill in Washington, Thursday, May 11, 2017, during the Senate Intelligence Committee hearing on major threats facing the U.S. (AP Photo/Jacquelyn Martin) ** FILE **
FILE - In this July 8, 2017 file image taken from FBI video and provided by the U.S. Attorney's Office in Hawaii on July 13, 2017, Army Sgt. 1st Class Ikaika Kang holds an Islamic State group flag after allegedly pledging allegiance to the terror group at a house in Honolulu. Newly unsealed court documents from an investigation into the Hawaii-based Army soldier accused of attempting to support the Islamic State group, provides more details about his obsession with the group's violence. (FBI/U.S Attorney's Office, District of Hawaii via AP, File)
In this July 8, 2017, file image taken from FBI video and provided by the U.S. Attorney's Office in Hawaii on July 13, 2017, Army Sgt. 1st Class Ikaika Kang holds an Islamic State group flag after allegedly pledging allegiance to the terror group at a house in Honolulu. Newly unsealed court documents from an investigation into the Hawaii-based Army soldier accused of attempting to support the Islamic State group, provides more details about his obsession with the group's violence. (FBI/U.S Attorney's Office, District of Hawaii via AP, File)
Acting FBI Director Andrew McCabe listens on Capitol Hill in Washington, Thursday, May 11, 2017, during the Senate Intelligence Committee hearing on major threats facing the U.S. (AP Photo/Jacquelyn Martin)
Acting FBI Director Andrew McCabe listens on Capitol Hill in Washington, Thursday, May 11, 2017, during the Senate Intelligence Committee hearing on major threats facing the U.S. (AP Photo/Jacquelyn Martin)