Analysis: James 'Whitey' Bulger To Seek Federal Immunity

The defense team for reputed Boston mob boss James "Whitey" Bulger is threatening to expose more corruption among federal agents at the time Bulger worked as an FBI informant. Bulger's lawyers say they plan to prove Bulger was promised immunity as an FBI informant, and that the murder and racketeering charges he's facing should therefore be thrown out.

One of the witnesses the defense says it might call is former federal prosecutor Richard Stearns — who is now the judge in charge of the Bulger case. The defense is also asking Stearns to recuse himself.

WBUR's David Boeri joins Morning Edition to discuss the latest.