The $2 billion losses at Chase highlights the need for completing the Volcker Rule with language that prevents banks engaging in risky trading activities. Former FDIC chairman Sheila Bair says precise language is needed to clarify the defiinition of hedging after the losses by a single trader's complex hedging bet in London. Individual traders have too much authority in existing trading arrangements to make complicated bets in finanial markets. Large losses were incurred by Swiss bank UBS when an individual trader in London made risky bets in 2011, raising all sorts of questions about the bank's risk management systems.