Authors United has submitted a request to the Department of Justice to investigate what the group describes as the “unprecedented power” Amazon has over the book publishing market. According to The Wall Street Journal, “The group formed last year in response to Amazon’s bruising negotiations with publisher Hachette Book Group, primarily over pricing. Led by author Douglas Preston, the group sent a letter to the DOJ that said Amazon has repeatedly blocked or limited the sale of thousands of books on its website, sold some books below cost to gain market share, and attempted to compel customers to buy books from its own imprints rather than from other companies.”