TikTok mounted a free speech challenge to a bipartisan law that sought to ban the app on national security grounds if its Chinese owner did not sell it.

The Supreme Court rulesd that the TikTok divest-or-ban law is constitutional

Now that the US Supreme Court has decided that a law banning TikTok is constitutional, the platform is set to shut down in the US on 19 January – but Trump could still save it