> Now that company may have channeled those chips to China, but officially Nvidia was not responsible for that unless it is proven that they knew about it.

It is almost adorable how naive this statement is.

For export controlled items like weapons, nuclear materials, GPUs, etc. you have to file for an export permit where you attest that you have performed sufficient due diligence and KYC that you strongly believe the person you are selling to is the end user.

You are literally accepting 100% liability for the items until they are returned to the US or irreversibly destroyed.