Erica Williams’s tenure as head of the Public Company Accounting Oversight Board (PCAOB) began Monday, after she was sworn in by the Securities and Exchange Commission (SEC).

Aaron Nicodemus is the Editor-in-Chief of Compliance Week. He previously worked as a reporter for Bloomberg Law and as business editor at the Telegram & Gazette in Worcester, Mass. Email: aaron.nicodemus@complianceweek.com LinkedIn:...