IRS has approved more than 50 small, locally based organizations seeking tax exemption under tax code Section 501(c)(4), including some tea party groups, and more of those exemptions are coming, Steven Miller, deputy commissioner for services and enforcement, tells a House Oversight subcommittee. Oversight Committee Chairman Boustany called the House Ways and Means hearing to discuss issues facing Section 501(c)(3) organizations. However, several lawmakers take the opportunity to grill Miller on the status of tea party groups' quest for tax exemption. The groups have petitioned IRS for 501(c)(4) social welfare organization status, meaning that they would be allowed to do some politicking as long as that is not their primary activity.