Sarbanes-Oxley and the PCAOB

1- The Sarbanes-Oxley (SOX) Act of 2002 established the Public Company Accounting Oversight Board (PCAOB) to 'police the auditors'. List what you consider to be three of the major provisions of SOX and explain why you believe they are important to improving audits.

2- How does the PCAOB 'police the auditors'.