This is just not how it works even if we really, really want it to work that way. US government can do it, and has done it before. At some point strong encryption was considered “munitions” and export controlled. If SSL can be “munition”, LLMs can be slapped on a label just like that. SSL/TLS stopped being qualified as such eventually so some sanity was restored. But as the legal and regulatory framework, it’s certainly there and has and is being used in that capacity.