WASHINGTON (AP) — President Barack Obama is moving to overhaul the way the U.S. government awards contracts for work to be done by the private sector, saying there have been too many abuses of taxpayer money. Obama joined Republican Sen. John McCain, his presidential campaign rival, and other congressional figures Wednesday to put his pen to an executive memorandum. The document essentially commits the administration to new marching orders for awarding such contracts, and Obama said that it could save up to $40 billion to $50 billion a year. One area in particular that is targeted is no-bid contracts, which...