The Supreme Court signaled in oral arguments Friday that it may uphold the federal ban on TikTok, potentially leaving it up to President-elect Donald Trump to try and keep the app legal once he takes office — but the president-elect has limited options if the law is upheld, and any attempts to stop it could be challenged in court.

As Supreme Court justices heard oral arguments in a case that could ban TikTok in the U.S., creators outside the court said losing the platform would be devastating.

The Supreme Court's nine justices heard arguments on Friday in a challenge by TikTok and its Chinese parent company ByteDance to a law that would force a sale or ban the widely used short-video app by Jan.