The US Supreme Court heard arguments Friday about whether or not to uphold a law that effectively bans the social media app TikTok. The law was signed last year and calls for the app to be sold by its Chinese parent company ByteDance by Sunday, and the app could be shut down in the US if the law is upheld.

Faced with a potential U.S. ban, TikTok plans to shut down its app nationwide on Sunday unless the U.S. Supreme Court intervenes. The company informed its nearly 170 million American users that, in the event the shutdown continues,