U.S. Sen. Lamar Alexander called today for the resignation of Health and Human Services Secretary Kathleen Sebelius, saying she should be held accountable for what he called “the disastrous rollout of Obamacare.”

“No private sector chief executive officer would escape accountability after such a poor performance,” the Maryville Republican said in a speech from the Senate floor. Alexander, the top Republican on a Senate committee that has jurisdiction over Sebelius’ agency, said the secretary appears not even to have told President Barack Obama about known problems that have crippled the government’s online health insurance marketplace in the days and months leading up to the website’s launch on Oct. 1.

Sebelius also has refused to provide information to Congress regarding the technical glitches that have plagued the site, despite Alexander’s and other lawmakers’ repeated requests for documents. Alexander and U.S. Rep. Darrell Issa, R-Calif., who chairs a House committee with oversight over the launch of health-care reform, threatened last week to issue a congressional subpoena if Sebelius did not comply with their request for documents. The deadline they imposed passed Monday evening with no response from the administration.

Meanwhile, Alexander filed legislation on Monday that, if approved, would force the administration to provide Congress with weekly reports about the website, HealthCare.gov. The reports would have to include updates on how many people have successfully enrolled for health insurance through the federal insurance exchanges, all of the technical problems that have plagued the system, what is being done to fix the problems, the cost of addressing the problems, and when the department first learned of the design and software issues that caused the glitches. Since the website went live, many consumers have complained it would freeze up and wouldn’t let them complete the sign-up process to buy insurance through one of the 36 federally run health insurance exchanges that were put in place as a result of the Affordable Care Act.

Insurance companies also have complained that the glitches caused them to receive incomplete information about consumers and, in some cases, to receive duplicate applications. “Secretary Sebelius is not responsible for enacting Obamacare,” Alexander said. “But she has been responsible for 3½ years for implementing it. Now, Americans have only a few weeks to purchase new insurance or be without health insurance.”

More than 30 other Republican members of Congress also have called for Sebelius to resign in light of the website’s technical problems.