NEW YORK - The Commodity Futures Trading Commission (CFTC), the U.S. government agency that has the responsibility protecting futures and options markets from fraud, on June 1 filed a proof of claim in the Chapter 11 bankruptcy of MF Global Holdings Ltd. (MFGH) for an undetermined amount of taxes and penalties (In Re: MF Global Holdings Ltd., No. 11-02790, Chapter 11, S.D. N.Y. Bkcy.). Subscribers may view the CFTC's claim available within the full update.