“All of the same speech that’s happening on TikTok could happen post-divestiture,” she said. “The act doesn’t regulate that at all. So it’s not saying you can’t have pro-China speech, you can’t have anti-American speech. It’s not regulating the algorithm.”
She added: “TikTok, if it were able to do so, could use precisely the same algorithm to display the same content by the same users. All the act is doing is trying to surgically remove the ability of a foreign adversary nation to get our data and to be able to exercise control over the platform.”
The court appears unlikely to wait for Trump.
President-elect Donald J. Trump has asked the Supreme Court to issue an injunction delaying the law from taking effect until after he assumes office on Jan. 20.
Mr. Trump once shared the view that Chinese control of TikTok was an intolerable national security risk, but reversed course around the time he met with a billionaire Republican donor with a stake in its parent company.
If the court does uphold the law, TikTok would effectively be banned in the United States on Jan. 19, Mr. Francisco said. He reiterated a request that the court temporarily pause the law from taking effect to push back that deadline, saying it would “simply buy everybody a little breathing space.” It might be a “different world” for TikTok after Jan. 20, he added.
But there was scant focus by the justices on that idea, suggesting that they did not take it seriously. Mr. Trump’s brief requesting that the court punt the issue past the end of President Biden’s term so he could handle it — signed by his pick to be the next solicitor general, D. John Sauer — was long on rhetoric extolling Mr. Trump, but short on substance.