In oral arguments before the Supreme Court Friday, lawyers for the Biden administration reiterated their argument that TikTok’s Chinese ownership poses a ‘grave’ national security risk for American users. U.S. Solicitor General Elizabeth Prelogar cited risks that China could weaponize the app, including by manipulating its algorithm to prioritize certain content or by ordering parent company ByteDance to turn over vast amounts of user data compiled by TikTok on U.S. users. ‘We know that the...