Sebelius, a lightning rod for critics, resigns

For five years, Health and Human Services Secretary Kathleen Sebelius has been a lightning rod for critics of President Barack Obama's health care law. But with sign-ups exceeding expectations and a new face soon to be in charge at HHS, the White House is eager to see if the poisonous atmosphere might give way to more pragmatic efforts aimed at fixing problems with the nation's newest social program.