Fed's Yellen Questions Whether Wall Street Ethics Up to Par

``... a series of scandals have ensnared firms including the disclosure that some bankers have manipulated the key London interbank offered rate, or Libor, leading to billions of dollars in fines globally. U.S. central bankers, including New York Fed President William Dudley, have complained about ethics and culture on Wall Street in the past, and the Fed is working on guidelines around executive compensation.'' -- Well, come on, it's just LIBOR. And Forex. And base metals. And precious metals. And...