It is true that the ban, running under the legislation titled "Protecting Americans from Foreign Adversary Controlled Applications Act," has run on the grounds that the app poses "a national-security threat of immense depth and scale," according to the U.S. Justice Department .

Legislation to ban TikTok in the United States has come into effect. What does this mean for TikTok users in the US?

The Supreme Court unanimously chose to uphold the TikTok ban-or-sell legislation. Here's what that means for the app and its U.S. users.