In the latest executive column, “A Closer Look,” John Hinman, Director, IRS Whistleblower Office, discusses how his team, working closely with other areas in the IRS, enhances tax enforcement through the valuable contributions of whistleblowers. “Whistleblower information that the IRS can act on is an important component of effective tax administration and contributes to identifying noncompliance and reducing the tax gap,” Hinman said. This feature is also available in Spanish.