The short-form video-hosting service TikTok has been under a de jure nationwide ban in the United States since January 19, 2025, due to the US government's concerns over potential user data collection and influence operations by the government of the People's Republic of China. The ban took effect after ByteDance, the China-based parent company of TikTok, refused to sell the service before the deadline of the Protecting Americans from Foreign Adversary Controlled Applications Act (PAFACA). Prior to the ban, individual states, cities, universities, and government-affiliated devices had restricted TikTok.
In 2020, President Donald Trump proposed a ban of the app as he viewed it as a national security threat. In August, he signed an executive order instructing that ByteDance divest from the app, though the order was blocked by a court injunction in September and was reversed by the Biden administration in 2021. However, in 2024, PAFACA was proposed in Congress due to alleged security concerns and pro-Palestinian bias. The bill was passed by Congress and signed into law by President Joe Biden, setting a deadline for the app to be banned unless a qualified divestment were made before then. Following a legal challenge from TikTok, the law was upheld by the Supreme Court.
On January 18, 2025, the day before the deadline of the law, TikTok suspended its services in the United States. The following day, after President-elect Trump signaled that he would grant an extension to TikTok upon being inaugurated, services were restored. On January 20, the first day of his term, Trump signed an executive order that halted enforcement of the ban for a 75-day period while his administration pursues a potential sale of TikTok to American owners.