Why doesn't TikTok just move out of the US completely? As far as I know, Trump does not have the authority to block foreign websites that he doesn't agree with (for example, the webpages of foreign terrorist groups or criminal organizations are easily accessible). The whole authority for Trump to block this is that ByteDance (a Chinese firm) is investing in TikTok (a US company). If TikTok was run abroad, and had no presence in the US there is nothing Trump can do, and US customers could still use the site.