The ruling Liberal Democratic Party has decided to appoint Itsunori Onodera, former chief of the party's Policy Research Council, as chairman of its Research Commission on the Tax System, party sources said Thursday. Onodera is expected to hold discussions with the opposition Democratic Party for the People (DPP) on proposals to scrap the provisional gasoline tax surcharges and raise the minimum taxable income level, according to the sources. LDP leader Sanae Takaichi, who was elected to the