This episode's headline: Hostage Standoff; Latino Power; On the Record; Dialogue. ANCHOR: JIM LEHRER; GUESTS: JONATHAN MILLER, Journalist; JOHN EHRLICHMAN, Former Nixon Aide; TOM WICKER, Journalist/Author; MONICA CROWLEY, Former Nixon Aide; DIALOGUE: ROGER SHATTUCK, Author; CORRESPONDENTS: CHARLES KRAUSE; KWAME HOLMAN; MARGARET WARNER; DAVID GERGEN; JEFFREY KAYE;