This episode's headline: Caterpillar - Hard Bargain; Vote of Confidence; Peru Crackdown. The guests include STEPHEN CABOT, Management Attorney; HARLEY SHAIKEN, Labor Analyst; ROBERT MacLEAN, Ambassador, Peru; RICARDO LETTS, Representative Peruvian Parliament; TINA ROSENBERG, Author; MARK FALCOFF, Latin American Analyst; CORRESPONDENT: IAN WILLIAMS. Byline: In New York: ROBERT MacNeil; In Washington: JUDY WOODRUFF