Books: Corruption Within

THE CASE AGAINST CONGRESS by Drew Pearson and Jack Anderson. 473 pages. Simon & Schuster. $5.95.

THE SENATOR by Drew Pearson. 447 pages. Doub/eday. $6.95.

Privately, Drew Pearson can be a charming fellow, and even mildly self-depreciatory. He proposes, for instance, to package and sell manure from his large farm outside Washington under the label "Drew Pearson's Best." But professionally, he is an angry man. He makes it his business to doubt the probity of anyone in public life until he has checked him out. He has often been irresponsible, a journalistic guerrilla. Still,...