'You have a problem with credibility': IRS chief comes under fire at House hearing

A fiery exchange erupted Monday night between IRS head John Koskinen and House Oversight Committee Chairman Darrell Issa, who told him, “we have a problem with you and you have a problem with credibility.”

Koskinen appeared at a rare evening hearing on Capitol Hill to answer questions about the missing emails of ex-IRS official Lois Lerner, a key figure in the committee’s probe into the agency’s targeting of conservative groups. The agency claims the emails were lost in a 2011 computer crash.

In a heated back-and-forth with Issa, Koskinen said he had fulfilled his promise to the committee to provide it with all of Lerner’s emails and that there was no way to recover ones the agency said were lost in 2011. More