Earlier quoted context omitted.
What exactly is the national security risk with TikTok?
Propaganda. You don't have to bother making troll farm accounts to spread misinformation and sow doubt when you control the platform and can create and drip content you want into peoples feeds, and you know what they like, you're already serving them an addictive stream of content based on their behaviors.
You'd probably say 'potential' but just think about it, banning something for 'potential'. Is that where we are right now?