After three hours of intense questioning, the future of TikTok now lies in the hands of the Supreme Court.
Supreme Court justices grilled lawyers for TikTok and the US government for nearly three hours on Friday.
The future of the divest-or-ban law now lies in their hands, with a ruling expected in the coming days.
Legal observers largely agree that the justices seem ready to uphold the law.
"Traditionally, the Supreme Court has been willing to defer somewhat when national security is at stake," says University of Richmond law professor Carl Tobias. "I expect that the justices by a majority will side with the government."
If this prediction holds, TikTok could be shut down as scheduled on January 19.
Alternatively, the Supreme Court could delay a decision on the case and issue a temporary injunction, granting President-elect Donald Trump the time to negotiate a political solution that, in his words, would "save TikTok."