The US government just saying they were pondering something is:

1) Far from them actually trying to do it

2) Very, very far from them actually doing it successfully

The US government absolutely cannot "just tell" private entities what products they're allowed to create and sell, and the fact that LLMs are arguably a form of expression will make these particular products extremely hard to regulate – especially as a broad "government checkpoint" on incremental product updates.

In China, it really is as simple as the government deciding that it doesn't like your products and ta-da, you can no longer sell them.

It's beyond naive to act like these are similar in any meaningful sense.