Nvidia appointed law firm Wachtell, Lipton, Rosen & Katz to conduct an independent investigation into CEO Jensen Huang's relationship with an alleged Chinese spy. The New York-based firm will be led by partner Joon Kim, a former government prosecutor who specializes in internal investigations, white-collar criminal defence, and crisis management, according to Wachtell's website. The $4.1 trillion chipmaker disclosed the move as reports emerged about the alleged relationship.