(CNN) — The rocky rollout of the Obama administration's health care enrollment website will be the subject of a congressional hearing Tuesday morning.
Marilyn Tavenner, administrator of the Centers for Medicare & Medicaid Services, is scheduled to testify before the House Ways and Means Committee.
Tavenner's agency oversaw the creation of the online health insurance marketplace that has taken so much heat.
She reports to Health and Human Services Secretary Kathleen Sebelius, who has come under fire for the problems that plagued the introduction of the enrollment website.
Expect lawmakers from both parties to pepper her with questions. Some see Tuesday's hearing as a warm-up for Sebelius' own appearance before Congress.
In an exclusive interview with CNN last week, Sebelius said President Barack Obama didn't know of the problems with the Affordable Care Act's website until after its glitch-laden launch on October 1. This was despite the fact that insurance companies had been complaining and the site crashed during a pre-launch test run.
The President has resisted calls from Republican opponents to show Sebelius the door.
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