When it comes to curbing unemployment, President Obama "will not rest" until everyone looking for a job can find one, White House spokesman Jay Carney said Wednesday. A couple of hours later, the White House put out an announcement that the president will soon begin a nine-day vacation in Martha's Vineyard. No one can credibly make the argument that Obama is loafing. He puts in the hours. But the trip is coming at a queasy moment for the economy and the markets. Stocks recorded another huge drop Wednesday, the third straight day of convulsive swings following Standard & Poor's announcement...