Someone explain to me how the US would stop people from using Chinese models?
Anyone in Europe can download and run a Chinese model and serve it up on the open internet to people in the US. What can the US do about that? The only thing the US can maybe do is ban exports of high powered GPUs to the EU. However the EU can retaliate by banning export of ASML machines to the US, so I don't think the US has that card to play.
The government can strong arm enterprises in a million ways. If they just issue a vague executive order large public companies won't want to buy inference from these models without regulatory certainty. Anyone in regulated industries is going to be weary of regulatory retaliation.
I.e. for Google to build data centers they need the US gov to play ball, so if they were considering a service of hosting open source models on their TPUs they wouldn't do this. Another example is the merger between Paramount and Skydance where they paid out Trump to get the merger approved [1].
[1]. https://www.yahoo.com/news/paramount-settles-donald-trump-la...
The US is trying to stop them for US companies, it doesn't care about non Americans.
Just declare it illegal (national security risks). Treat it like sexual abuse material, scan cloud services for copies, and jail everyone who has them.