This episode's headline: Term Limits; Hard Times. The guests include REP. JOHN PORTER, [R] Illinois; REP. KWEISI MFUME, [D] Maryland; CLETA MITCHELL, Term Limits Legal Institute; CONNIE SMITH, United We Stand; LEE CULLUM, Dallas Morning News; CYNTHIA TUCKER, Atlanta Constitution;DAN GRISWOLD, Colorado Springs, Gazette Telegraph; ED BAUMEISTER, Trenton Times; MINDY CAMERON, Seattle Times; CORRESPONDENTS: KWAME HOLMAN; MARGARET WARNER; CHARLES KRAUSE. Byline: In New York: ROBERT MAC NEIL; In Washington: JAMES LEHRER