Photo: Jim WATSON / AFPSource: AFPUS President Joe Biden's debut on TikTok has caused a stir -- not least because the Chinese-owned social media platform is still officially considered a security risk by Washington. Even the White House admitted it still had concerns about TikTok on Monday. "There are still national security concerns about the use of Tiktok on government devices and there's been no change to that policy," National Security Council spokesman John Kirby told reporters after repeated questions about the issue. "It's a concern that we have," said White House Press Secretary Karine Jean-Pierre. "Panic is when the Biden campaign joins TikTok after the White House banned the app from devices a year ago," added Republican Representative Darrell Issa.
