Montana must approve Friday a law to ban TikTok, a text difficult to apply. It increases the pressure already strong in the United States against the popular platform.

The law prohibits app stores, which are essentially Google (Android) and Apple (iOS), from distributing TikTok to users in Montana. It also states that the law would be invalidated if TikTok was acquired by a company from a country "not considered an enemy" of the U.S., such as China. The White House is working on bills to ban it in the country.