https://worldjusticeproject.org/sites/default/files/document...
Of course it would. The Supreme Court can "invalidate laws, acts and governmental actions that are incompatible with" the Constitution [1][2].
[1] https://en.wikipedia.org/wiki/Judicial_review
[2] https://en.wikipedia.org/wiki/Judicial_review_in_the_United_...
It could be "challenged" but it would be dismissed rapidly, because of ample precedent, and the Supreme Court would almost assuredly refuse to take the case.
As for preventing the American subsidiary to be owned by the current owners, Congress has the power to personally sanction foreign individuals.
Alternatively, Congress would have the power to nationalize (in exchange for a fair market price) the American subsidiary of TikTok and then sell it, legally.
Jurisprudence is that Congress can indeed do this, as it has been done and defended many times. As for the executive, that's much dicier.
I would say this is not weird by any means, it is by intentions, and is indeed how most things go about in US. I will be more surprise to see Trump's EO go without challenges.
Edit: According to the company themselves, it was their largest overseas market with a userbase of 200 million.
https://en.wikipedia.org/wiki/List_of_sovereign_states_in_Eu...
https://en.wikipedia.org/wiki/List_of_Indian_states_and_unio...
https://www.forbes.com/sites/zakdoffman/2020/07/04/tiktok-lo...
India, used as the example, has a very flawed democracy and a high degree of corruption.
EDIT: LOL, downvoted to oblivion by the HN India contingent. As provided elsewhere, India's democratic and corruption rankings are mediocre.
How come?
https://www.transparency.org/en/cpi
India is no benchmark. There are far worse countries, but if someone cites India's actions as an example, it falls flat.
I went through the list. India is ranked around 50.
If you ignore all the cute european countries like Finland, Denmark, Liechtenstein etc from the top, which doesn't even qualify as a big city in India, I would say India is doing pretty good for a country where 1/6 population of the world live.
Sure, India is by far the most democratic country of its own size or larger.
But that literally just means “not as bad as China”. It's kind of like if the Republic of Korea (which could support stronger claims, to be sure) was said to be “pretty good for a country located on the Korean peninsula”—it is true, but doesn't say a lot.
It's possible that one of the things it says is that democracy (at least the values measured by the index) is not scale independent, and more specifically democratic values are inherently incompatible with large states. I don't think the second part is actually true, at least with current technology and at the scales involved, but that seems to be the “defense” of India here.
I replied to someone saying "ha ha isn't that weird they can contest it in the US look countries like India just went ahead and banned it and there's no recourse". Great. Other countries can talk about it, go through a legislative process (in Japan lawmakers aren't even going to start talking about their possible options until September), then there are legal challenges and normal processes to go through, etc.
The difference is where the corruption happens (lobbying for billion dollar contracts, rather than a private citizen slipping a civil servant a few notes to speed along some approval or another). The former type of corruption doesn't get taken into account in any world corruption index, so Americans think they're not corrupt.