A group of American investors vying to buy TikTok with support from top YouTuber MrBeast has secured more than $20 billion for their offer, according to Jesse Tinsley, the tech entrepreneur organizing the bid.The group has also recruited two additional tech CEOs as investors, including Roblox Corp. co-founder and Chief Executive Officer David Baszucki and Anchorage Digital co-founder and CEO Nathan McCauley, Tinsley said during an interview on Bloomberg Television. An Anchorage Digital spokesper...