TikTok’s future in the United States now sits squarely in the hands of the Supreme Court, which will hear oral arguments Friday. At its core, the case features a head-on collision between national security and the First Amendment.

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.

While President-elect Donald Trump has asked the Supreme Court to block a looming U.S. ban on TikTok in a major case being argued on Friday that pits free speech rights against national security concerns over the Chinese-owned short-video app,