Whether or not the Volcker Rule is needed is a debate that has passed as it will soon be in place. However, there will remain plenty of questions as to how it will work in practice.Next Tuesday, 10 December, promises to be a memorable day for U.S. financial institutions and markets. That will be the day, apparently, when U.S. government regulatory agencies approve the final regulations that enact the so-called Volcker Rule, a portion of the massive Dodd-Frank financial market legislation passed by Congress in July 2010 in response to the financial crisis and meltdown that occurred in 2008.The Volcker Rule, named for its key supporter, former Fed Chairman Paul Volcker, is arguably the most contentious part of the highly controversial Dodd-Fr...