The justices will review a law that would effectively shut down TikTok in the United States this month unless the company divests from Chinese ownership.

The only branch of the federal government without a social media presence will weigh the fate of one of the nation’s most popular video-sharing apps on Friday, delving into a viral fight over whether TikTok’s ties to China threaten national security.

The Supreme Court will consider the landmark TikTok ban, balancing free speech and national security over ByteDance’s Chinese ownership risks.