Issa came under attack for killing the microphone on Rep. Elijah Cummings.
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House Republicans were thrust onto the defensive Thursday as Democrats waged a multi-pronged attack against Rep. Darrell Issa (R-Calif.) and his aggressive leadership style atop the House Oversight Committee.

Issa came under attack for killing the microphone on Rep. Elijah Cummings (Md.), the panel’s senior Democrat, at the end of a heated hearing on political targeting at the Internal Revenue Service.

Issa said he personally apologized Thursday for silencing Cummings during the hearing, according to UT San Diego.

Rep. James Lankford (R-Okla.), a member of House leadership, said Issa could have handled Wednesday’s hearing better, and suggested Republicans were frustrated that Issa had become the story, in lieu of the IRS.