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

On Thursday, Ms. Lee testified for a second day in Manhattan federal court at the trial of Jia "Jenny" Hou, Mr. Liu's former campaign treasurer, and Xing Wu "Oliver" Pan, a longtime campaign contributor.

WSJ: City Comptroller John Liu Stands By His Aide