** FILE ** White House Press Secretary Ari Fleischer reacts to a journalist's question during his last news conference at the White House in Washington in this July 14, 2003, file photo. Four years after President Bush's State of the Union speech touched off a stormy debate over the threat posed by Iraq, former White House aide "Scooter" Libby goes on trial Tuesday, Jan. 16, 2007, in the CIA leak investigation, and former press secretary Fleischer is expected to be a key witness. (AP Photo/Charles Dharapak, File)