In a collision between free speech and national security, the Supreme Court will hear arguments over the fate of TikTok, a digital age cultural phenomenon that roughly half the U.S. population uses for entertainment and information.

In response to concerns that China can use the platform to spy on Americans and spread propaganda, Congress last year passed a law requiring TikTok’s parent company to sell it to a non-Chinese owner. TikTok and the parent company, ByteDance, then sued to block the law. This morning, the Supreme Court will hear arguments in the case.

The United States Supreme Court is set to hear arguments on Friday in a pivotal case that will determine whether the federal government can enforce a nationwide ban on TikTok. At the heart of this debate lies a contentious question: does TikTok,