Former Treasury Secretary Steven Mnuchin is building an investor group to acquire ByteDance’s TikTok, as a bipartisan piece of legislation winding its way through Congress threatens its continued existence in the U.S.us polictics news Former Treasury Secretary Steven Mnuchin is building an investor group to acquire ByteDance’s TikTok, as a bipartisan piece of legislation winding its way through Congress threatens its continued existence in the U.S.