TikTok CEO Shou Zi Chew testifies during a hearing of the House Energy and Commerce Committee, on the platform's consumer privacy and data security practices and impact on children on Capitol Hill in Washington on March 23.Jacquelyn Martin/The Associated Press TikTok Chief Executive Shou Zi Chew has mostly kept a low profile since taking the job in 2021 but on Thursday he is testifying before U.S. lawmakers, many of them suspicious of the popular Chinese-owned social media app. Chew previously worked as an investment banker at Goldman Sachs and investment firm DST, which was an early backer of ByteDance, the...