Washington: Former Treasury Secretary Steve Mnuchin says he’s going to put together an investor group to buy TikTok. Former Treasury Secretary Steven Mnuchin says he’s going to put together an investor group to buy TikTok, a day after the House of Representatives passed a bill that would ban the popular video app in the US if its China-based owner doesn’t sell its stake.Washington: Former Treasury Secretary Steve Mnuchin says he’s going to put together an investor group to buy TikTok. Former Treasury Secretary Steven Mnuchin says he’s going to put together an investor group to buy TikTok, a day after the House of Representatives passed a bill that would ban the popular video app in the US if its China-based owner doesn’t sell its stake.