The Supreme Court justices sounded highly skeptical Friday of TikTok's free-speech defense, signaling they are not likely to strike down the law that could shut down the popular video site the day before President-elect Donald Trump takes the oath of office.

The court heard 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.

Congress labeled the app’s Chinese ownership a national security risk and passed a law that would ban the social media platform unless it was sold. TikTok and creators say that violates their free speech rights.

The lawyer for TikTok and its Chinese parent company ByteDance offered a warning during Supreme Court arguments over a law that would compel the sale of the short-video app or ban it in the United States: If Congress could do this to TikTok,

The justices are hearing arguments to decide whether the Chinese-owned app must shut down by Jan. 19

The Supreme Court appeared to favor the government's national security claims over TikTok's 1st Amendment argument.

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.

TikTok ran into a wave of skepticism Friday when it urged the Supreme Court to strike down a law that could end its presence in the U.S. in one of the most high-profile standoffs of the social media era.

TikTok's lawyers and some of their creators opened up about possible repercussions of a TikTok ban after the Supreme Court heard arguments in the case.