I guess people are wondering why this is such a big deal...
If Jensen knew this Singapore company was really a Chinese front then he's complicit in evading US export controls which is jail time.
Sleeping with their executive causes lots of questions to be asked. Did he override company due diligence on export controls to China, etc.
At the very least it gives the US government a reason to look into nvidia's export controls processes which are probably severely lacking.
He's not going to jail. Even if he hypothetically does, Trump will just pardon him.