Japan's opposition bloc on Monday urged heavyweights of the Liberal Democratic Party to testify as sworn witnesses in parliament as part of investigations into a political funds scandal that has significantly eroded public trust in the ruling LDP.At a House of Representatives ethics committee session, Hakubun Shimomura, a key lawmaker of the LDP's biggest faction, said he was not aware when the group began handing portions of its fundraising party revenue back to its members, regarded as a slush fund for them.Other major members of the faction at the center of the scandal, formerly led by t…READ FULL ARTICLE