This whole thing is both silly and unsurprising.

Everybody knows the fearmongering about Chinese control and manipulation is a smokescreen. The real reason is that Tiktok doesn't fall in line with State Department propaganda [1].

It's noteworthy that SCOTUS sidestepped this issue entirely by not even considering the secret evidence the government brought.

That being said, it's unsurprising because you can make a strictly commerce-based argument that has nothing to do with speech and the First Amendment. Personally, I think reciprocity would've been a far more defensible position, in that US apps like Google, FB, Youtube and IG are restricted from the Chinese market so you could demand recipricol access on strictly commerce grounds.

The best analogy is the restriction on foreign ownership of media outlets, which used to be a big deal. Back in the 1980s and 1990s, US companies would defend themselves from foreign takeovers by buying TV stations, for example. That's basically the premise of the movie Working Girl, as one (fictional) example.

Politically, the big loser here is Biden and the Democratic Party because they will be (rightly) blamed for banning a highly popular app (even though the Congressional vote was hugely bipartisan) and Trump will likely get credit for saving Tiktok.

[1]: https://x.com/Roots_Action/status/1767941861866348615

We don't know that the secret evidence was that TT doesn't promote U.S. propaganda. We can surmise, but speculation can be wrong. Besides, the justices might simply have revealed that secret evidence, had it really been just that. But they claim they didn't even consider the secret evidence. Unclear whether they took a peek, but they say they didn't consider it.