Montana has become the first state to ban TikTok.

Gov. Greg Gianforte signed a bill Wednesday banning the social media app in the state.

Gianforte tweeted that he has banned TikTok in Montana “to protect Montanans’ personal and private data from the Chinese Communist Party,” officially making it the first state to ban the social media application.

The bill, which will take effect in January, prohibiting the app from operating within state lines. There is a potential fine of $10,000 per day for violators, including app stores that make the social media application available.

Last month, lawmakers in Montana’s House of Representatives voted 54-43 to pass the bill SB419, sending it to Gianforte’s desk.

“Governor Gianforte has signed a bill that infringes on the First Amendment rights of the people of Montana by unlawfully banning TikTok, a platform that empowers hundreds of thousands of people across the state,” a TikTok statement to CNN read. “We want to reassure Montanans that they can continue using TikTok to express themselves, earn a living, and find community as we continue working to defend the rights of our users inside and outside of Montana.”

The American Civil Liberties of Montana and NetChoice, a trade group that counts Google and TikTok as its members, also called the law unconstitutional. Keegan Medrano, policy director for the ACLU of Montana, said the Legislature “trampled on the free speech of hundreds of thousands of Montanans who use the app to express themselves, gather information and run their small business, in the name of anti-Chinese sentiment.”

On Wednesday, Gianforte also announced he was prohibiting the use of all social media applications tied to foreign adversaries on state equipment and for state businesses in Montana effective on June 1. Among the apps he listed are WeChat, whose parent company is headquartered in China; and Telegram Messenger, which was founded in Russia.

Opponents say Montana residents could easily circumvent the ban by using a virtual private network, a service that shields internet users by encrypting their data traffic, preventing others from observing their web browsing. Montana state officials say geofencing technology is used with online sports gambling apps, which are deactivated in states where online gambling is illegal.

The Associated Press contributed to this report.