Redmond, Wash. - Japanese games maker Nintendo's U.S. unit on Thursday asked the U.S. Trade Representative to encourage the governments of China, Korea, Brazil, Mexico, Paraguay and Hong Kong to "take a more aggressive stance to combat piracy of Nintendo video games and systems."

Geneva - The U.S. Trade Representative said that China discriminates against the release of American music and movies in the country, and may include the allegations in its complaint against China filed with the World Trade Organization (WTO), the Associated Press reported.