The law—which prohibits U.S. app stores from hosting TikTok unless Chinese parent company ByteDance divests from it—is scheduled to take effect one day before Trump’s Jan. 2

The court is hearing oral arguments on TikTok’s bid to block a law that would lead to its ban in the U.S. starting Jan. 19 if it isn’t sold by its Chinese owner.

The U.S. Supreme Court heard oral arguments Friday over the potential TikTok ban. The app will shut down in nine days, unless the nation's highest court intervenes. TikTok's parent company, China-based ByteDance,