The law—which prohibits U.S. app stores from hosting TikTok unless Chinese parent company ByteDance divests from it—is scheduled to take effect one day before Trump’s Jan. 2

The law that could ban TikTok is coming before the Supreme Court on Friday, with the justices largely holding the app's fate in their hands. The popular social media platform says the law violates the First Amendment and should be struck down.

But TikTok rejects that claim, arguing it has been unfairly targeted and the measure violates the free speech of its some 170 million American users. Lower courts have sided with