(Adds statement from lawyer for Carl Icahn)
By Nate Raymond and Jonathan Stempel
NEW YORK, May 19 (Reuters) - U.S. authorities on Thursday charged a former chairman of Dean Foods Co and a professional Las Vegas gambler with engaging in an insider trading scheme that netted more than $40 million and included a tip that benefited professional golfer Phil Mickelson.
William "Billy" Walters, who has built a multimillion-dollar fortune as a famed Las Vegas sports bettor, was accused in an indictment filed in Manhattan federal court of trading on tips from Thomas Davis, Dean Foods' former chairman.