WASHINGTON (AP) — As the public face of President Barack Obama's signature health care program, Kathleen Sebelius has become the target for attacks over its botched rollout. Republicans want her to resign and even some Democrats — while not mentioning Sebelius — say someone should be fired.

The secretary of Health and Human Services has been lampooned on late-night comedy shows, from "The Daily Show" to "Saturday Night Live," in which a stand-in Sebelius last week offered tips to people having trouble signing into the new health care website: restart your computer, send a postcard to Washington with the word "help" or buy an airline ticket to Canada.

For months, Sebelius had projected steady confidence that the online health insurance markets would open Oct. 1 as scheduled in all 50 states and that a website that's the key to public enrollments would be ready. How much she knew about the website's problems, and when, are key questions she'll face Wednesday at a hearing of the House Energy and Commerce Committee.