FILE - This June 23, 2011 file booking photo provided by the U.S. Marshals Service shows James "Whitey" Bulger. A federal judge in Boston will hear arguments Wednesday, Feb. 13, 2013,

 

              FILE - This June 23, 2011 file booking photo provided by the U.S. Marshals Service shows James "Whitey" Bulger.  A federal judge in Boston will hear arguments Wednesday, Feb. 13, 2013,
FILE - This June 23, 2011 file booking photo provided by the U.S. Marshals Service shows James "Whitey" Bulger. A federal judge in Boston will hear arguments Wednesday, Feb. 13, 2013, on Bulger's claim that he was given immunity to commit crimes while he was an FBI informant. Bulger's lawyers want to use his immunity claim as a defense at his upcoming trial. (AP Photo/U.S. Marshals Service, File)