The people on this "hit list" are likely to be killed while at home, sleeping in their bed, driving in a car with friends or family, or engaged in a whole array of other activities. More critically still, the Obama administration -- like the Bush administration before it -- defines the "battlefield" as the entire world. So the President claims the power to order U.S. citizens killed anywhere in the world, while engaged even in the most benign activities carried out far away from any actual battlefield, based solely on his say-so and with no judicial oversight or other checks. That's quite a power for an American President to claim for himself.