 Three years later, Union Bank was again accused of money-laundering and in September, 2007, the Department of Justice and the Treasury Department announced that Union Bank had agreed to pay $31.6 million in penalties and forfeitures to settle government claims that it had been implicated in an elaborate drug money laundering scheme involving Mexican exchange houses known as casas de cambio.In August 2008, Mitsubishi UFJ offered to buy the 35 percent of Union Bank it did not already own, which Union Bank accepted.On November 4, 2008, the Bank of Tokyo-Mitsubishi UFJ (BTMU), a wholly owned subsidiary of Mitsubishi UFJ Financial Group (MUFG), announced that BTMU had successfully acquired all of the outstanding shares of UnionBanCal Corporation.