SAN FRANCISCO – The federal judge who overturned California's same-sex marriage ban has more bad news for the measure's sponsors: he not only is unwilling to keep gay couples from marrying beyond next Wednesday, he doubts the ban's backers have the right to challenge his ruling. Chief U.S. District Judge Vaughn R. Walker on Thursday rejected a request to delay his decision striking down Proposition 8 from taking effect until high courts can take up an appeal lodged by its supporters. One of the reasons, the judge said, is he's not sure the proponents have the authority to appeal since...