There needs to be an investigation, I know Nvidia will cry that they didn't break any rules while knowing their partners are forwarding GPUs to China, Russia, Iran, etc. Perhaps a multi-billion $$$ fine against Nvidia and sanctions against any country that was used as a party to these transactions are in order. This is a national security issue for the USA.
I'm skeptical. If it was actually a national security issue those GPUs would not be allowed to be sold to civilians. You can't have something that is easily portable and readily available to and tradable between civilians in the US and realistically expect it not to get out.