I am not sure this is even a response to anything. It looks like the first US move in a new confrontation with China. Merely treating is as a response, isn't

I am not sure this is even a response to anything. It looks like the first US move in a new confrontation with China. Merely treating is as a response, isn't sufficiently strong explanation in my opinion. More over I don't think President has power/authority to ban anything at all, let alone apps on privately administered app stores. President isn't a dictator elected by the people. There might be legitimate grounds to take action against an app/service like data breaches or copyright infringement, even terms of right violations, but nothing of that seems to be the case. Even if it was the case, it would have to go through the legal justice system. From what I have seen, the theory of threats to national security being bandied about isn't substantial nor concrete enough to hold in courts. So if TikTok does not run afoul of our laws, there shouldn't be grounds for banning that or any other app citing vague and theoretical national security considerations.