The parliament on Wednesday approved a bill submitted by the ruling Liberal Democratic Party to revise the political funds control law in the wake of the party's "slush fund" scandal.
The bill was approved at the day's plenary meeting of the House of Councilors, the upper chamber of the Diet, with support from the LDP and its coalition partner, Komeito.
Opposition parties, including the Constitutional Democratic Party of Japan (CDP) and Nippon Ishin no Kai, voted against the bill.