Health and Human Services Secretary Kathleen Sebelius is facing new calls to resign before she testifies this week on how her department bungled the rollout of Obamacare.

"No private sector chief executive officer would escape accountability after such a poor performance,” said Tennessee Sen. Lamar Alexander, the top Republican on the Senate Health, Education, Labor and Pensions Committee. “It is time for the president to ask the Secretary of Health and Human Services to resign,” he added.

Conservative leader Brent Bozell, chairman of ForAmerica, urged Congress to nix plans to have Sebelius testify on the website errors. “How can Congress believe anything Sebelius says? We now know that this administration has misled, deceived and knowingly lied to the American people repeatedly,” he said.

Both Alexander and Bozell expressed frustration that the administration has been tight with details on the Obamacare website and, separately, their moves to reinterpret the law.

“The Obamacare law that was passed does not even exist anymore,” said Bozell. “Sebelius should resign rather than continue to disgrace herself and the administration,” he added.

Alexander hit the administration’s lack of accountability and refusal to fire any top official involved in Obamacare. “At some point, there has to be accountability," Alexander said. "Taxpayers have spent $400 million to create exchanges that, after three and one-half years, still don't work."

He also said he had lost faith in Sebelius. “Expecting this secretary to be able to fix in a few weeks what she has not been able to fix during the last three and one-half years is unrealistic. It is throwing good money after bad."

Sebelius is scheduled to testify before the House Energy and Commerce Committee on Wednesday. It will be her first appearance before Congress since the Obamacare website went live Oct. 1.

The administration is defending and standing behind Sebelius despite growing calls for her resignation.

Paul Bedard, the Washington Examiner's "Washington Secrets" columnist, can be contacted at