This episode's headline: Healing Powers?; Southern Exposure; Broken Engagement; Soy Indio. The guests include SEN. TOM DASCHLE, [D] South Dakota; SEN. PHIL GRAMM, [R] Texas; SEN. DAVID DURENBERGER, [R] Minnesota; KEN AULETTA, The New Yorker; RICHARD MacDONALD, Media Analyst; CORRESPONDENTS: KWAME HOLMAN; ELIZABETH FARNSWORTH; RICHARD RODRIGUEZ. Byline: In New York: ROBERT MacNeil; In Washington: JAMES LEHRER