The companies alleged that the law violated the US Constitution, including an attack on the country’s free speech protections. 

"For the first time in history, Congress has enacted a law that subjects a single, named speech platform to a permanent, nationwide ban," the two companies said in the lawsuit. 

The lawsuit stated that divesting the US arm of TikTok “is simply not possible: not commercially, not technologically, not legally.”

“There is no question: the Act will force a shutdown of TikTok by January 19, 2025, silencing the 170 million Americans who use the platform to communicate in ways that cannot be replicated elsewhere,” the lawsuit said. 

Lawmakers warned that the Chinese Communist Party (CCP) may use TikTok as a tool to monitor US user data or disseminate CCP propaganda. The app is currently used by approximately 170 million Americans.

The US government said it does not want a TikTok ban but wants an end to its Chinese ownership for national security reasons. 

Representative Frank Pallone said he hopes the divestment of TikTok will enable Americans to “continue to use this and other similarly situated platforms without the risk that they are being operated and controlled by our adversaries”.

TikTok continues to refute claims that it has, or ever will, share US user data with Chinese authorities.