BRASILIA, Brazil - Impeachment proceedings began Wednesday against a federal legislator — a former top Cabinet official — in connection with a bribery scandal that has rocked President Luiz Inacio da Silva's Workers' Party, which prided itself on its ethical behavior. Rep. Jose Dirceu, who stepped down as Silva's chief of staff and returned to his seat in Congress in June, stands accused of overseeing an alleged scheme where the government paid lawmakers for their support on key votes. Dirceu again proclaimed his innocence Wednesday, saying "I'm going to defend myself, because I committed no crime." Dirceu has a week...