Peter A. Weinberg and Joseph R. Perella are part of a band of Wall Street renegades — “a small group of speculators,” President Obama called them Thursday — who helped bankrupt Chrysler. That, anyway, is the Washington line. In fact, Mr. Weinberg and Mr. Perella, with sparkling Wall Street pedigrees, are the epitome of white-shoe investment bankers. And their boutique investment bank, a latecomer to Chrysler, played only a small role in the slow-motion wreck of the Detroit carmaker. But now the two men, along with a handful of other financiers, are being blamed for precipitating the bankruptcy of an...