It is only one of nine accounting firms in the U.S. that the Sarbanes-Oxley Act requires to be inspected annually by thePCAOB(Public CompanyAccountingOversightBoard) because the firm audits over 100 companies that are traded on stock exchanges here in the United States (18 of them Chinese).
ThePublicCompanyAccountingOversightBoard(PCAOB), which is the American agency in charge of ensuring US auditors are doing a proper job, have expressed frustration at their inability to access and measure the effectiveness of audits done in China.