The Attorney General, or at the direction of the Attorney General, any officer or employee of the Department of Justice may require by subpoena access to any institution that is the subject of an investigation under this subchapter and to any document, record, material, file, report, memorandum, policy, procedure, investigation, video or audio recording, or quality assurance report relating to any institution that is the subject of an investigation under this subchapter to determine whether there are conditions which deprive persons residing in or confined to the institution of any rights, privileges, or immunities secured or protected by the Constitution or laws of the United States.