The two are big conservative donors
                                
                                
                                    (Newser) -
                                    The SEC has filed suit in New York against famed Dallas billionaire investors Sam and Charles Wyly, accusing them, their attorney, and their stockbroker of insider trading. The 78-page complaint alleges the Wyly brothers made $550 million in undisclosed gains over 13 years by trading in securities of companies on...