Cue up the indignant reactions: President Barack Obama and his family are about to go on an eight-day vacation on the Massachusetts island of Martha's Vineyard, an elite playground for the East Coast wealthy set. Often the criticism of a president's vacation is partisan in nature, which is why White House spokesman Jay Carney dismissed a question about it when asked whether Obama's vacation was too extravagant. "I would just check what they said six years ago," he said, referring to a period when a Republican president, George W. Bush, was in office. Bush, who vacationed at his Texas ranch...