Attorney General Eric Holder is wasting no time changing the guard after the high-profile reversal of the prosecution against former Senator Ted Stevens. Holder is expected to name Mary Patrice Brown, a local prosecutor in D.C., to head the Office of Professional Responsibility, the Washington Post reports. "The ethics job is among the most sensitive and secretive within the Justice Department," according to the paper. "Among other issues, the OPR has been examining whether Bush-era lawyers who drafted memos in support of waterboarding and other harsh detainee interrogation tactics followed professional legal standards." Brown will serve as the third leader of the unit, which was started in the wake of Watergate.