U.S. House Bans TikTok on Phones of Representatives and Staff

The U.S. House of Representatives is banning TikTok on all House-managed devices, moving to get in sync with a new law banning the app on executive branch government phones amid mounting national-security concerns.

The Chief Administrative Officer advised House members and their staff that the social-media application was banned from phones for all House members and staff effective immediately. U.S. officials and lawmakers from both parties have raised concerns about the app’s owner, Beijing-based ByteDance Ltd.

Brooke Oberwetter, a spokeswoman for TikTok, said the move would have minimal practical impact as the...