Michelle won't let Barack pick Hillary as VP.

Robert Novak says:

The Democratic front-runner's wife did not comment on other rival candidates for the party's nomination, but she has been sniping at Clinton since last summer. According to Obama sources, those public utterances do not reveal the extent of her hostility.

And please don't call it the "Queen Bee Syndrome."

Do you know what the Queen Bee Syndrome is? There will not be two women sharing power. One of the women will see to it, that the other woman is under the bus.

That definition of the term came from Rush Limbaugh in the context of saying why Nancy Pelosi would want to prevent Hillary from getting the VP slot:

So Nancy Pelosi... was asked about the concept of a "dream ticket" for the Democrat Party.... The Queen Bee in Washington, Nancy Pelosi, threw "cold water" on this whole idea. She said, "Take it from me -- that won't be the ticket." A bunch of reporters then shouted, 'Why?' Pelosi declined to elaborate. 'Do you want me to go through a lifetime of political gut?' said Pelosi... 'I do think we'll have a dream team -- it just won't be those two names,'" meaning, if Nancy Pelosi has anything to say about it, Hillary Clinton will not be anywhere near the Democrat nomination.... The last thing she wants is Hillary Clinton in the White House. That will render her unnoticeable as speaker of the House. Neutered, if you will. Spayed. So what will happen here (laughter) is that Pelosi, who already holds her seat, is going to do whatever she has to, to see to it that Hillary does not get hers. I mean, it's fine if she stays over there in the Senate, and even better if she goes back to the Senate as a loser.

Do powerful women hate to see other women succeed? Do they want to be the only woman? Or do you think "sisterhood is powerful" at the highest levels? Surely, Michelle Obama has plenty of reason to hate Hillary, but don't you think she wants to be the First Lady? If a woman is Vice President, that woman seems to be above the President's wife. She'd be the first lady.

Michelle would even have competition as the top spouse of the land, what with a former President roaming in and about the VP mansion. He'd catch the spotlight, project the glamour.

And speaking of Bill Clinton... Hillary certainly made it her business over the years to keep other women down whenever those women interfered with her plan to ascend to power via the spousal role. There was no powerful sisterhood then. And now: turnabout! Turnabout is... a bitch.