(18)The Public Company Accounting Oversight Board of the United States of America would like to evaluate further the auditor oversight systems of the Member States before deciding to rely on the oversight performed by their competent authorities. Therefore, the mechanism of cooperation between the competent authorities of the Member States and the Public Company Accounting Oversight Board of the United States of America and the Securities and Exchange Commission of the United States of America should be reviewed to assess the progress made towards reaching mutual reliance on each other. For these reasons, this Decision should cease to apply on 31 July 2013 in respect of the Public Company Accounting Oversight Board of the United States of America and the Securities and Exchange Commission of the United States of America.