The government and ruling camp are planning not to extend the current extraordinary session of the Diet, which is scheduled to end on Dec. 9, sources in the administration said Thursday. Enacting important bills, including one to ratify a recently signed Japan-U.S. trade agreement, without extending the session is possible, the sources said, adding that an extension is unnecessary also because the ruling bloc has given up on passing a controversial bill to amend the national referendum law during the ongoing session. "In principle, there's no need to extend the extraordinary session once the trade pact ratification bill is passed," a senior official of Komeito, the coalition partner of the ruling Liberal Democratic Party, said. "The Diet session won't be extended unless a very urgent issue comes up," an LDP official in charge of parliamentary affairs said. The House of Councilors launched full-fledged debates on the trade bill Thursday, at its Foreign Affairs and Defense Committee, after the House of Representatives passed it Tuesday.