This episode's headline: Playback; Senate Stakes - Virginia; Another Killing Field. The guests include PETER HUBER, Manhattan Institute; LAURENCE TRIBE, Harvard Law School; JOHN SHEBEL, Associated Industries of Florida; HAROLD LEWIS, Florida Agency for Health Care Administration; DR. PHILIPPE BIBERSON, Doctors Without Borders; CORRESPONDENTS: BETTY ANN BOWSER; CHARLAYNE HUNTER-GAULT; WILLIAM DAUZ. Byline: In New York: ROBERT MAC NEIL; In Washington: MARGARET WARNER