The CFTC had originally planned to finalize the rule months ago, but the agency delayed the overhaul amid fierce push-back from Jon Corzine, who at the time was the chief executive of MF Global.  Mr. Corzine resigned on 11/4/11, four days after MF Global filed for bankruptcy. MF Global allegedly violated that principle in the firm’s final chaotic days, tapping its segregated client accounts to meet its own financial obligations.  Investigators have since been looking for what some estimate is as much as $1.2bn in missing money.  (The CFTC is leading the hunt for the money while the FBI is examining potential wrongdoing.) This is the first in a line of many new rules regulators are considering, including numerous proposed rules for brokerage firms. The SEC is weighing new accounting disclosures for the industry and there is renewed call for federal regulators to keep a closer watch of brokerage firms, reclaiming oversight authority now delegated to for-profit exchanges like the CME Group. For more info, go to [Dealbook 12/5/11].