This episode's headline: Drug Testing; Just Say No?; Political Heir?; Updike's Version. The guests include In Washington: RICHARD WILLARD, Justice Department; ROBERT TOBIAS, National Treasury Employees Union; In New York: JESSE PHILIPS, Chairman, Philips Industries; JOHN UPDIKE, Author; In Atlanta: GENE GUERRERO, Civil Liberties Union; REPORTS FROM NEWSHOUR CORRESPONDENTS: JOHN SIMPSON (BBC), In Paris; JUNE MASSELL, in San Francisco; JOHN MERROW, in Washington; HOWARD HUSOCK, in Boston. Byline: In New York: ROBERT MacNEIL, Executive Editor; In Washington: JUDY WOODRUFF, Correspondent