The Subcommittee on Taxation and IRS Oversight of the Senate Finance Committee has released the testimony from yesterday’s hearing [blogged here] on A Closer Look at the Size and Sources of the Tax Gap:

• Mark J. Mazur, Director, Research, Analysis, and Statistics, IRS
• Michael Brostek, Director, Tax Issues, Strategic Issues Team, U.S. Government Accountability Office
• J. Russell George, Treasury Inspector General for Tax Administration
• Nina E. Olson, National Taxpayer Advocate, Taxpayer Advocate Service
• Raymond T. Wagner, Jr., Chairman, IRS Oversight Board, and Legal and Legislative Vice President, Enterprise Rent-A-Car Company