Montana becomes the first state to ban TikTok, citing concerns about Chinese Communist Party access to personal data.
The law targets TikTok specifically and imposes fines of $10,000 per day for violators.
TikTok plans to defend the rights of users in Montana and criticizes the law as infringing on free speech.
Critics argue the ban is unconstitutional and violates due process and free speech rights.
Concerns about TikTok's ties to China and potential data access for spying purposes have been raised.
No evidence has been presented to support claims that the Chinese government has accessed US user data.
NetChoice, a technology trade group including TikTok, deems the Montana bill unconstitutional.
The ACLU expresses opposition to the ban, claiming it infringes on free speech and promotes anti-Chinese sentiment.
Montana also prohibits the use of other social media apps tied to foreign adversaries on government devices.
The ban is expected to face legal challenges in court.