justice kagan, becoming the fourth woman ever to sit on the u.s. supreme court. chief justice john roberts, seen here administering the oath in a ceremony today. kelly: you can t get a bigger political showdown than this, president obama head to head against former president bill clinton. neither of their names will be on the ballot, but their influence will be. molly henneberg with more from washington. next tuesday in colorado, president obama versus former president clinton, or at least the candidates the two men have endorsed. on the ballot in the democratic senate primary, current senator michael bennett. who is appointed to the seat when ken salazar left to become interior secretary. andrew romanov, former speaker of the colorado house, has been endorsed by former president clinton. romanov picked up on a report that a teacher pension financing