Congressional leaders sparred with TikTok CEO Shou Zi Chew in Washington on Thursday. Chew was on Capitol Hill to discuss TikTok’s data security. It comes at a time when the US is considering banning the social media platform that is used by over 150 million Americans. But is the US a little too concerned with threats emerging from China? The World’s Carol Hills spoke with Professor David Kang who believes the US is overstating China’s threat as a global adversary.