This episode's headline: Campaign for Change; Hi-Tech Frontier - Engineering - A Shortage; Building Scandal. The guests include REP. AL SWIFT, [D] Washington; REP. GUY VANDER JAGT, [R] Michigan; FRED WERTHEIMER, Common Cause; C. BOYDEN GRAY, White House Counsel; CORRESPONDENTS: JUDY WOODRUFF; JOHN MERROW; KWAME HOLMAN. Byline: In New York: ROBERT MacNEIL; In Washington: JAMES LEHRER