Signed into law 15 years ago, on July 30, 2002, the Sarbanes-Oxley Act (SOX) transformed the public accounting arena in significant ways. From mandatory internal controls testing to regular inspections from the Public Company Accounting Oversight Board, SOX introduced changes that today are seen as the standard features of any worthwhile audit. But now, a decade and a half later, lawmakers and business leaders have questioned the legacy of these changes and, indeed, are seeking to roll some of them back.