Except as provided in subparagraph (B), the Inspector General shall report directly to, and be under the general supervision of, the Secretary of Defense. (B) Independence to conduct investigations and audits No officer of the Department of Defense shall prevent or prohibit the Inspector General from initiating, carrying out, or completing any audit or investigation related to racial and ethnic disparities or from issuing any subpoena during the course of any such audit or investigation. (6) Duties (A) Oversight of military justice It shall be the duty of the Inspector General to conduct, supervise, and coordinate audits and investigations of— (i) the effect of military justice policies and practices on racial and ethnic disparities, including overrepresentation of minorities in actions related to investigations, courts-martial, nonjudicial punishments, and other military justice actions as determined by the Inspector General