NEW YORK (Reuters) - A federal appeals court signaled that victims of Bernard Madoff's fraud more than four years ago might be allowed to eventually sue the swindler's family members over their losses, if they're willing to wait longer. The 2nd U.S. Circuit Court of Appeals in New York weighed whether investors, including a charitable foundation for Senator Frank Lautenberg, Democrat of New Jersey, and the town of Fairfield, Connecticut, could pursue claims against Madoff's brother Peter, his son Andrew, and the estate of his late son, Mark. Irving Picard, the trustee liquidating Bernard L. ...