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.

The justices are expected to rule quickly in the case, which pits national security concerns about China against the First Amendment’s protection of free speech.

Lawyers for TikTok will argue that banning the app will violate the free speech of 170 million American users. The Justice Department will contend that the app is a national security risk.