House Oversight Committee Chairman Darrell Issa, R-Calif., and Rep. Elijah Cummings, D-Md., left, the ranking member, listen to testimony by Internal Revenue Service Commissioner John Koskinen as the ... more 
House Oversight Committee Chairman Darrell Issa, R-Calif., and Rep. Elijah Cummings, D-Md., left, the ranking member, listen to testimony by Internal Revenue Service Commissioner John Koskinen as the GOP majority continues the probe of whether tea party groups were improperly targeted for increased scrutiny by the IRS, at the Capitol in Washington, Wednesday, March 26, 2014. Issa and Cummings clashed earlier this month when IRS official Lois Lerner invoked the Fifth Amendment rather than testify, leading Issa to abruptly adjourn the hearing and order committee staff to turn off the microphone of the committee's top Democrat, Rep. Cummings. (AP Photo/J. Scott Applewhite) less 
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Associated Press | Photo By J. Scott Applewhite
Wed, Mar 26, 2014 3:57 PM EDT