To do this, we can't just say "Chinese social networks are not allowed in the US...

To do this, we can't just say "Chinese social networks are not allowed in the US", because that is not what China is doing. You need to outlaw whatever it is TikTok is doing that you do not like in the first place.

Facebook is not allowed to operate in China not because they are American, but because they do not want to comply with Chinese law.