And it's too early to call the rollout a failure, the health secretary argued. There's a long way to go for people to take advantage in person, by calling or by using the website during the open-enrollment period.
When that six-month stretch is over, Sebelius said, people can make more valid judgments as to whether this part of Obamacare is a success or failure.
Sebelius, rather than being disheartened by the website criticisms, says that what's happened so far leaves her optimistic.
"What we're seeing in not only the states that are run by the federal website, but states around the country, is that interest is huge," she said. "People are eager to have this affordable product, and that product is there."