Exactly what Obama was counting on when he asked her to join the team: a significant, powerful, worldly, respected figure who could hit the ground running. So far she's playing nicely with others, hired an all-star team, and is working hard at the job with a great sense of history and opportunity. Is hearkening back to her Senate days by running a tight ship and avoiding controversy. Despite occasionally tweaking the president (as with his engagement with foreign strongmen), she shows no signs of being anything other than a loyal advocate and a reliable surrogate.
—By Mark Halperin
See a special report on the Obama Administration's first 100 days.