In the altered landscape that is Washington, there's a new contender for the title of Scariest Guy in Town. He stands 5 ft. 5, speaks softly and has all the panache of your parents' dentist. But when it comes to putting powerful people on the hot seat, there's no one tougher and more tenacious than veteran California Congressman Henry Waxman. In the Democrats' wilderness years, Waxman fashioned himself as his party's chief inquisitor. Working with one of the most highly regarded staffs on Capitol Hill, he has spent the past eight years churning out some 2,000 headline-grabbing reports, blasting the Bush...