The White House is giving U.S. federal agencies 30 days to delete popular Chinese-owned social media app TikTok from all government-issued mobile devices amid growing concerns about security. Canada announced a similar ban.

Congress, the White House itself and more than half of U.S. states had already banned TikTok amid concerns that China could use its legal and regulatory powers to obtain private user data or to try to push misinformation or narratives favoring China. U.S. armed forces have prohibited the app on military devices, and the European Union’s executive branch has temporarily banned TikTok from employee phones.