Nvidia CEO Jensen Huang admitted to having a romantic relationship with a suspected Chinese spy in a message to his company. The big picture: The company's board launched an independent investigation into reports that he was targeted by Chinese intelligence.Driving the news: "I owe my family and all of you an apology," Huang wrote in a draft email to Nvidia employees obtained by Axios."I was unfaithful to my wife. My actions hurt her and our children. There is no excuse for what I did."