This episode's headline: Back to Work; Economic (In)Security? - Political Perspective; Lifting the Ban?; Newsmaker; Responsibility Lite. ANCHOR: JIM LEHRER; GUESTS: DON GONYEA, National Public Radio; ROBERT REICH, Labor Secretary; SEN. CONNIE MACK, Chairman, Joint Economic Committee; FOCUS - LIFTING THE BAN?: [Debate Over Lifting Assault Weapons Ban - Discussion Led by Mr. Lehrer] REP. BILL McCOLLUM, [R] Florida; REP. CHARLES SCHUMER, [D] New York; PRESIDENT RENE PREVAL, Haiti; CORRESPONDENTS: MARGARET WARNER; ELIZABETH FARNSWORTH; CHARLAYNE HUNTER-GAULT; ANNE TAYLOR FLEMING