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TikTok sues the US government over ban
(www.theverge.com)
This is a most excellent place for technology news and articles.
They don't need to: https://en.wikipedia.org/wiki/CLOUD_Act
Requires a warrant or subpoena. That is the difference.
Also requires the company to be US-based, so doesn't apply here. Well, not yet, that's the whole point of forcing them to sell or be banned.