Associated Press: BP says it hasn’t decided yet whether to cut off a live video feed when it begins trying to cut off the Gulf oil leak by injecting heavy drilling mud into the well. Democratic Congressman Edward J. Markey of Massachusetts said Tuesday the company will shut off the video feed supplied by an underwater robot when it begins the so-called top kill maneuver it hopes to try Wednesday. But BP spokesman John Curry said Tuesday the company is still evaluating whether it will be possible …