Sebelius became the Secretary of Health and Human Services in 2009, and was at the forefront of the debate and rollout of healthcare reform in the United States. In that role, she's spent the past six months playing defense due to millions of Americans' inability to access to new healthcare program's website.

Just this morning, Sebelius announced that 7.5 million Americans have signed up for healthcare under the Patient Protection and Affordable Care Act thus far. That number is expected to grow even higher, as around 400K people per week are currently signing up.

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