Vancouver, Dec. 29 -- The popular Chinese video app TikTok has been banned from all US House of Representatives-managed devices, according to the House's administration arm, mimicking a law soon to go into effect banning the app from government devices. The app is considered "high risk due to a number of security issues," the House's chief administrative officer said in a message sent to all lawmakers and staff on Tuesday, and must be deleted from all devices managed by the House. P8...