Obama "delayed his decision" on Karl Rove's refusal to testify before Congress regarding the Bush administration's firings of nine U.S. attorneys. Rove claims "executive privilege". As the new chief executive, Obama needs to say whether he supports the executive privilege claims of Rove (and Bush and Cheney and Miers and Gonzalez, etc.)
The real question for Obama: Does Obama want Axelrod and Emanuel and the rest of his people hauled in front of the next Republican led investigating committee in 2 or 4 or 8 years?
Unless Obama believes that Democratic control of Congress is permanent, he's going to support Rove and disappoint many of his own supporters.