Note that Mad Mobama walked into the room first. This is yet another symbol of her dominance over him in their relationship.
As President, Raila Odinga's favorite cousin should have entered the room first.
I generally disagree with nearly everything Obama does, but I view at this as a sign of courtesy. I would do the same if my wife and I were entering the room together. He may be a jackass, but I don't fault him for this.