Controversial exiled Chinese billionaire Guo Wengui — an associate of former Trump White House advisor Steve Bannon — was arrested Wednesday in New York for allegedly orchestrating a complex $1 billion fraud scheme that duped online followers with promises of outsized investment returns. Guo allegedly used some of the money raised through his company GTV Media and other entities to buy a 50,000-square foot New Jersey mansion, a $37 million yacht, a $3.5 million Ferrari for his son, a $140,000 Bosendorfer piano and two Hasten 2000T mattresses that cost a whopping $36,000 apiece. Prosecutors seized more than $650 million in...