This episode's headline: Slowing Down; 50 Years of Integration; Political Wrap; Camp Memories. ANCHOR: JIM LEHRER; GUESTS: DAVID WYSS, Standard & Poor's DRI; JIM WILCOX, University of California; DORIS KEARNS GOODWIN, Presidential Historian; MICHAEL BESCHLOSS, Presidential Historian; HAYNES JOHNSON, Journalist/Author; LT. GEN. JULIUS BECTON [Ret.], U.S. Army; PAUL GIGOT, Wall Street Journal;TOM OLIPHANT, Boston Globe; CORRESPONDENTS: KWAME HOLMAN; MARGARET WARNER; JIM FISHER; PAUL SOLMAN;PHIL PONCE; ELIZABETH FARNSWORTH