Hillary Clinton's campaign said she would end her campaign for president at an event in Washington, D.C. Saturday. Clinton will "thank her supporters and express her support for Senator Obama and party unity," the campaign said in a statement. The campaign initially planned a Friday event, but rescheduled it to Saturday in a second statement, in order "to accomodate more of Senator Clinton's supporters who want to attend." Clinton delivered something approaching a victory speech Tuesday night, just minutes after the media reported that Senator Barack Obama had clinched the nomination with a majority of the pledged delegates. But reality...