Jensen Huang, who has stepped down as president, CEO and board member of Nvidia with immediate effect, is set to testify before Congress before Thanksgiving, according to House Foreign Affairs Committee Chairman Brian Mast. Mast, a Republican from Florida, said Huang agreed to appear on Wednesday, hours before Nvidia announced his resignation, after lawmakers threatened him with a subpoena. The hearing is expected to be held behind closed doors, but Mast expects it to be filmed and transcribed, and the House Intelligence and China-focused committees will join the Foreign Affairs panel.

The departure follows reports that Huang admitted to an affair with a woman suspected of being a Chinese spy, identified as Alice Huang, a former executive at Singapore-based Megaspeed International, and that the company was investigating him. On Wednesday, it was reported that he had another affair, this time with Kimberly Powell, an Nvidia executive who reported to him. President Donald Trump said the FBI is also investigating the situation. Colette Kress, Nvidia's executive vice president and chief financial officer, is serving as interim CEO while the company seeks a permanent successor.S1S3

Lawmakers are expected to examine what Huang knew about Alice Huang, whether their contacts created risks to US national security or Nvidia's sensitive technology, and the company's safeguards against foreign intelligence operations and its dealings with China-linked customers and partners. Mast said he and Huang have been at odds over export controls, but that Nvidia is a very important company to the United States and that Huang has serious questions to answer.S1S3

Separately, the US Department of Justice is reportedly investigating Alice Huang to determine whether entities associated with her were involved in attempts to smuggle Super Micro Computer products to China, and it is leading an inquiry into Megaspeed over alleged smuggling of US-made chips in defiance of export restrictions, which the company says it will cooperate with. Singapore's Ministry of Home Affairs said Alice Huang was barred from re-entering the country after police determined she knowingly offered inaccurate information to downplay her role at Megaspeed, though it found insufficient evidence that Huang had committed offences relating to possible inaccurate declarations. The investigation into Megaspeed and six other individuals is ongoing.S1