Last summer , Mr. Aguirre testified to Congress that his investigation into the fund was supported by senior S.E.C. officials until he sought the testimony of John J. Mack , now the chief executive of Morgan Stanley and a friend of Mr. Samberg 's .
John J. Mack
Morgan Stanley
/business/person/company
ORGANIZATION
Congress
PERSON
John J. Mack
ORGANIZATION
Morgan Stanley