Concerns about TikTok's Chinese parent ByteDance focus on (a) potential PRC government access to U.S. user data, (b) potential covert manipulation of the recommendation algorithm to influence U.S. opinion, and (c) data on minors.
The Protecting Americans from Foreign Adversary Controlled Applications Act (signed April 2024) requires ByteDance to divest TikTok or face a U.S. ban; the Supreme Court upheld the law in TikTok Inc. v. Garland (2025). Implementation has been politically contested.
Broader implications include other Chinese-controlled apps (Temu, Shein, RedNote), American app access in China (Apple's App Store local-compliance debates), and precedents for foreign-app restrictions.