Regulatory actions and programs Grant Thornton CEOs on the PCAOB November 11, 2009 10:25 AM 10:09 Facebook Twitter LinkedIn Email Grant Thornton CEO Ed Nusbaum and incoming CEO Stephen Chipman talk to Accounting Today editor-in-chief Bill Carlino about the Supreme Court case involving the SEC's oversight of the Public Company Accounting Oversight Board and Sarbanes-Oxley.