Trump suggests Tim Cook should run Nvidia after Jensen Huang quits

Meanwhile, Congress is moving fast. Committees want Huang to testify under oath as part of a broader investigation into the risk of American technology leaking abroad and the circumstances of his recent relationships. Two Republican committee chairs said Huang has agreed in principle to appear in a closed session. It is not clear whether his testimony would ever be made public or stay on a private record. Rep. Brian Mast said that if Huang backs out, the committees could subpoena him.

Lawmakers also want to hear from other Nvidia officials who worked closely with Huang and with the running of the company. The aim is to assess its security policies and how it deals with foreign parties.

Why is Congress investigating Jensen Huang?

The inquiry centres on protecting US technology from infiltration and espionage, and on a review of chip export policy toward China. Some Republican lawmakers see Huang as one of the loudest backers of looser export restrictions. In their view, his resignation and the alleged relationship "shed new light" on those policies.

Rep. John Moolenaar, who chairs a committee that monitors relations with China, said Huang's testimony is central to understanding how Chinese intelligence tries to reach sensitive information held by private companies. Calls for tighter limits on American tech firms are growing, he added.

For now, the Cook suggestion is just that: a suggestion from Trump. The source material does not say who will actually lead Nvidia next.