So it's unlikely the government will be able to put a stop to it. Especially given AI is a technology that many will find very useful. They can't even put a stop to child sexual abuse material on the Internet, material which is universally hated. How are they ever going to stop AI development then? It's all going to go underground, on the darknet.
And restricting the development of open source software likely will be found unconstitutional, on First Amendment grounds, in the US. And it's likely to spur civil disobedience as well.
Admittedly, at the time, socialist/communist were to some degree supported by the U.S. intellectuals - were’ve been quite a few that were sympathizing. So recruitment was easy. Hopefully this is not the case now. As it is quite clear that there is no good reason to support Putin, unless you happen to be his buddy, crony or an asset (i.e. Trump).
They can't stop CSAM because of the tradeoff against privacy, not for technical reasons. AI development requires expensive, specialized hardware. Just not really comparable things.
Does it though? I can run LLaMA on my desktop. Training requires hardware which is more expensive if you want it to run quickly, but it's in the range of tens of thousands of dollars. That's not beyond the means of many individuals, much less organizations. And in a few years it will be hundreds of dollars.