Sorry, Callista
                                
                                
                                    (Newser) -
                                    Newt Gingrich's much-derided interest-free  credit line at Tiffany & Co  is no more, reports the  Washington Post,  citing personal finance records that were released today. In May, financial disclosure forms for his wife, Callista, indicated the family had a credit line between $250,000 and $500,000 with the...