TikTok has promised to sue over the potential US ban. What's the legal outlook?

NEW YORK — Legislation forcing TikTok's parent company to sell the video-sharing platform or face a ban in the U.S. 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…