The White House is floating Susan Rice as a potential secretary of state. In a interview about Benghazi, their opponents thought it would be good to start vilifying her now, using Rep. Joe Heck as their cudgel. Soledad O'Brien seemed to be of the belief that Susan Rice should get a fair hearing. So she decided to ask actual questions rather than let pundits be pundits. It's quite enjoyable. If all journalists reacted like her on TV, Washington might actually get some stuff done.
At 1:00, the congressman starts attacking. At 1:30, Soledad brings up a very reasonable point. At 2:12, Who is on first. At 2:47, What is on second. At 3:20, I Don't Know is on third. And Soledad asks for backup because she's so confused by his completely irrational arguments.