Almost four years later, investigators say they should never have had access to nonprofits' private tax information
Documents prove attack on conservative groups was an agency-wide effort, not the act of a few rogue agents
Republicans look to force the former IRS official to account for her actions against conservative groups
Lawmakers grill agency head for answers and emails in targeting scandal
House committee’s blistering report lays the groundwork for holding the former IRS official in contempt of Congress
J.C. Derrick | The Obama administration plows ahead with IRS plans to clamp down on some nonprofit groups
Former IRS manager refuses to answer lawmakers’ questions about the targeting of conservative groups
Suspense builds around IRS official's congressional appearance on Wednesday
