FILE - In this Oct. 19, 1973, file photo special Watergate prosecutor Archibald Cox talks to media outside the U.S. District Court in Washington after ousted White House counsel John W. Dean III pleaded guilty to conspiring to obstruct the Watergate investigation. Materials released by the Nixon Presidential Library on Tuesday, June 23, 2009, show aides trying to head off a U.S. constitutional crisis and save a presidency after Nixon fired Cox on Oct. 20, 1973, and forced out the two top Justice Department officials shortly after Cox voiced his objections to a proposed Watergate tapes compromise and said he planed to ask the federal courts to act on President Richard Nixon's "noncompliance with the court's order." (AP Photo/File)