American born Abdulrahman Al-Awlaki had no ties to terrorist organizations but was targeted and kill without any evidence or due process. This is using national resources to commit murder without any oversight.
It’s sticky situation like I said and there are valid arguments to be made for taking far more care than Barack Obama has, to effect a capture rather than a kill when it is a US citizen involved. I don’t know why al-Awlaki’s family hasn’t tried suing for wrongful death if the situation is this clear.