SAN FRANCISCO - A city official who officiated at last year's weddings of same-sex couples announced Thursday she was resigning while under investigation for her hiring practices. San Francisco Assessor-Recorder Mabel Teng cited personal turmoil over a divorce and scrutiny of her management of the office that assesses property and maintains city records. Teng told Mayor Gavin Newsom that she would remain in office until May 15. Last fall, the city's Civil Service Commission began investigating whether Teng violated patronage and nepotism rules by allegedly hiring or promoting her campaign workers and contributors. Last month, the commission issued a report...