This episode's headline: Taxing Debate; NewsMaker; Dialogue; Summer Grief. ANCHOR: ELIZABETH FARNSWORTH; GUESTS: SADAKO OGATA, UN High Commissioner for Refugees; ELIZABETH DREW, Author, ""The Corruption of American Politics"" ELIZABETH DREW, Author, ""The Corruption of American Politics"" CORRESPONDENTS: KWAME HOLMAN; SPENCER MICHELS; DAVID GERGEN; MARGARET WARNER