by DONALD RIEGLE with TREVOR ARMBRISTER
297 pages. Doubleday. $7.95.
Michigan Republican Donald Riegle was elected to Congress at 28, boyishly glamorous and unabashedly candid about his ambitions to fetch up in the White House. Now, at 34, he is a disenchanted public servant who likes to link himself with those "beautiful kids" whose "day is coming." O Congress is Congressman Riegle's yearlong diary (beginning in April of last year), kept while Congress was in session and printed, he says, to "prompt a few young people to enter politics." Yet Riegle's account...