DAVID SHEPARDSON The White House gave government agencies 30 days to ensure they do not have the Chinese-owned app TikTok on federal devices and systems. In a bid to keep U.S. data safe, all federal agencies must eliminate TikTok from phones and systems and prohibit internet traffic from reaching the company, Office of Management and Budget Director Shalanda Young told agencies in a guidance memorandum seen by Reuters. The ban, ordered by Congress late last year, follows similar actions from Canada, the EU, Taiwan and more than half of U.S. states. The device ban — while impacting a tiny portion of TikTok's…