Marc suggests Obama make a calculated move:
Vetting, or pretending to vet Hillary Clinton costs almost nothing and has an enormous upside. Not vetting her costs nothing and has a big downside if the fact of the non-vetting is revealed. So even if Obama doesn't intend to select Clinton -- and I don't think he does -- there's really no reason why his search team wouldn't want to, at some point, ask Cheryl Mills to send over some documents...those not already in the public domain. That five minute telephone call -- and later reporting that she's been vetted -- will give Clinton supporters some evidence that Obama takes Clinton seriously.