The suit, which was filed in the Federal District Court for the Central District of California, is TikTok’s most direct challenge to the White House and escalates an increasingly bitter back-and-forth between the popular video app and American officials.
Mr. Trump has repeatedly said TikTok, which is owned by the Chinese internet company ByteDance, poses a national security threat because of its Chinese ties. On Aug. 6, he issued twin executive orders banning transactions with TikTok and the Chinese social media app WeChat within 45 days. A week later, he issued a separate executive order giving ByteDance 90 days to divest from its American assets and any data that TikTok had gathered in the United States.
