TikTok promises to sue over potential US ban. What’s the legal outlook?

Legislation forcing TikTok’s parent company to sell the video-sharing platform or face a ban in the US received President Joe Biden’s official signoff Wednesday. But the newly minted law could be in for an uphill battle in court.

Critics of the sell-or-be-banned ultimatum argue it violates TikTok users’ First Amendment rights. The app’s China-based owner, ByteDance, has already promised to sue, calling the measure unconstitutional.

But a court challenge’s success is not is not guaranteed. The law’s opponents, which include advocacy organizations like the American Civil Liberties Union, maintain that the government hasn’t come close to justifying banning TikTok, while others say national-security claims could still prevail.