The Supreme Court has upheld a law that effectively bans TikTok, requiring the app to shut down or divest its U.S. operations by January 19. The ruling concludes TikTok's prolonged legal battle, stating concerns over national security and foreign surveillance. The decision follows a request from various petitioners arguing the ban violates the First Amendment. TikTok had warned users that the app would go dark if the ban took effect. The law reflects ongoing tensions regarding foreign apps and data privacy, with implications for users and the tech industry at large.