What to know

• The lawsuits alleges the tech giant didn't disclose that the matter raised national security concerns that threatened Nvidia's reputation and business prospects.S1
• The allegations have raised national security concerns over access to advanced AI chips and the technology company’s business interests in ChinaS2
• President Trump defended Nvidia CEO Jensen Huang after the company's board announced it was investigating Huang's relationship with an alleged Chinese spy. NBC News' Kelly O'Donnell and Brian Cheung discuss the national security implications of Huang's affair...S3