The US Securities and Exchange Commission today accused the China affilaites of the multinational BDO, Deloitte, Ernst & Young, KPMG, and Pricewaterhouse Coopers accounting groups and accused them of "willfully failing"  produce documents on China-based, U.S.-listed companies suspected of defrauding U.S. investors, in violation of both U.S. securities law, and the Sarbanes-Oxley accounting law.
Read the SEC complaint here, news release here.