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 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.

Justices will hear arguments in two consolidated cases taking aim at the federal law, which requires Chinese-owned ByteDance to divest from TikTok, or else TikTok will be banned from U.S. app stores and from being hosted by American internet service providers.