Paul Ryan Slams IRS Commissioner For Lost Emails: "I Don't Believe You!"

Internal Revenue Service (IRS) Commissioner John Koskinen appeared before the House Ways and Means Committee today as part of the committee's investigation into the IRS for targeting conservative tax-exempt groups for extra scrutiny.

The appearance came a week after the agency informed congressional investigators that it had lost emails from Lois Lerner, a central figure in the investigation, in a hard drive crash, and could not produce documents from six other employees as well—despite having known that the records were lost since February. 

Rep. Paul Ryan (R-Wis.) was not pleased, accusing the IRS of a "pattern of abuse" with regards to the investigation. "I don't believe you," Ryan said. 

Watch the clip below.