Associated Press: President Barack Obama said Saturday that the failure of BP’s latest effort to stop the damaging flow of oil into the Gulf of Mexico is “as enraging as it is heartbreaking.” Obama commented after BP officials reached the disappointing conclusion that a dayslong effort to stop the flow of oil, known as a “top kill,” by packing the well with mud had failed. It was the latest in a series of failed attempts by BP to cut off the flow of oil. BP will now try anew by cutting …