Darrell Issa

Rep. Darrell Issa motions to Republican staff members to cut off the microphone of Rep. Elijah E. Cummings, left, during a hearing of the House Oversight and Government Reform Committee on Wednesday. (Brendan Smialowski / AFP-Getty Images / March 5, 2014)

WASHINGTON – The House Republican majority shot down a Democratic effort Thursday to condemn Rep. Darrell Issa, chairman of the House oversight committee, for the "disrespectful manner" in which he adjourned a hearing as the panel’s top Democrat was speaking.

[Updated, 10:36 p.m. PST March 6: Later, Issa said he had personally apologized to the Democratic lawmaker who was cut short during the hearing. "I just wanted to clear the air with @RepCummings," Issa said on Twitter, referring to Rep. Elijah E. Cummings (D-Md).

He linked to an interview he gave to the San Diego Union-Tribune, in which he reported he had apologized to the lawmaker. "Mr. Cummings is a member of Congress who works very hard for his constituents," he said.

Issa called what happened at the hearing "an unfortunate incident" and said he should have handled the matter differently.

"I could have offered to reopen the hearing and allowed him to make a second statement," Issa told the paper. "As chairman, I should have been much more sensitive to the mood of what was going on, and I take responsibility."

Cummings confirmed in a statement that the two had spoken.

"This evening, Chairman Issa telephoned me and apologized for his conduct, and I accepted his apology," the statement said. "My sincere hope is that as we move forward, we will respect the opinions of all members of the committee, we will proceed in a deliberate and considered manner to obtain the facts, we will refrain from making accusations that have no basis in fact, and we will seek resolution rather than unnecessary conflict."]

Wednesday's hearing heightened partisan tensions in the Capitol and revived a debate on whether Issa, the Obama administration's chief antagonist in Congress, has been working to root out government wrongdoing or pushing a partisan agenda.

Democrats criticized Issa (R-Vista) for turning off Cummings' microphone during a hearing in which a former Internal Revenue Service official invoked her 5th Amendment right not to testify about the agency's alleged targeting of conservative groups.

Issa tried to question Lois Lerner anyway, without success. After Issa banged the gavel to adjourn the hearing, Cummings asked to speak.

"Mr. Chairman. Mr. Chairman, I have a statement. I have a procedural question, Mr. Chairman," Cummings said. "Mr. Chairman, you cannot run a committee like this. ... We're better than that as a country. We're better than that as a committee."

Issa said Cummings could ask his question.

But after Cummings began to speak, Issa said: "We're adjourned. Close it down," and signaled the GOP staff, with his hand across his neck, to turn off the microphone.

On Thursday, Rep. Marcia L. Fudge (D-Ohio) introduced a resolution assailing Issa for his "abusive behavior," accusing him of violating House rules that require members to "behave at all times in a manner that shall reflect creditably on the House."

The Republican majority tabled the resolution on a party-line vote.

Fudge, chairwoman of the Congressional Black Caucus, also sent a letter to House Speaker John A. Boehner (R-Ohio) calling on him to remove Issa as chairman of the oversight panel.

Bohener said Issa was "within his rights to adjourn the hearing when he did."

"He's done an effective job as chairman, and I support him," Boehner said at his weekly news conference.

Issa spokesman Frederick Hill said Democrats' criticism "only underscores their vehement opposition to getting to the bottom of wrongdoing at the IRS. Chairman Issa is committed to continuing the investigation."

Every Democrat on the oversight committee had signed a letter calling on Issa to apologize. House Minority Leader Nancy Pelosi (D-San Francisco) said Cummings was seeking to "elicit information that Mr. Issa supposedly wanted, except it might not have been what he wanted to hear, so he shut it down. It wasn't just about being rude. It's about not hearing what you don't want to hear."

Issa began his investigation after an audit found that IRS staff in Cincinnati had inappropriately flagged conservative organizations, pulling aside applications with keywords such as "tea party" and policy objectives such as "educating on the Constitution and Bill of Rights." The organizations were seeking recognition as tax-exempt social welfare groups, which are permitted to do a limited amount of political activity, as long as it is not their primary purpose.