Court papers show Ms. Lee has received immunity from prosecutors in exchange for her testimony as a witness at next week's trial of former campaign treasurer Jia "Jenny" Hou and fundraiser Xing Wu "Oliver" Pan.

WSJ: Trial Pits Liu's Aide, Ex-Backers

The jurors also heard lawyers for Liu's ex-campaign treasurer, Jia "Jenny" Hou, and former fundraiser Xing "Oliver" Wu Pan portray them as political neophytes caught in the crossfire of an overzealous corruption investigation of Liu's campaign finances.

WSJ: NY jury begins hearing case against Liu aides

Liu's ex-campaign treasurer, Jia "Jenny" Hou, and former Liu fundraiser Xing "Oliver" Wu Pan are facing federal charges of conspiring to break campaign finance laws.

WSJ: Trial opens for aides of NYC mayoral hopeful