What a difference half a year makes. In December, then-Gov. Kathleen Sebelius said it was "important to continue my service as governor of the great state of Kansas, a job that I love and have been honored to hold."Asked Wednesday by Jon Stewart on "The Daily Show" about how things are going in her new job as secretary of Health and Human Services, Sebelius said: "Piece of cake. It's why I ran for public office. It's why I joined this administration. This is what it's all about."Stewart went on: "You were the governor of a heartland state. You left in the middle of your term for a higher calling. Why are governors such quitters?" Sebelius jokingly responded: "You know, didn't want to get bored. Had to find something else to do."