Detention of enemies is part of “prosecution of war,” as is the provision of supplies, management of national resources, recruiting and training, and many other things. I am not talking about those things. I am concerned with the command and direction of military forces that are engaging in hostile and lethal activities. I am not talking about what happens if we capture a person.
The judiciary can review compliance with the laws of war. It cannot inject itself with the command of the military.
I’m not totally sure I understand your second sentence here… Except in the most extreme (and probably unrealistic) circumstances (like I mention below), I believe that the US military should not be used to pursue US persons on US soil. I base this on the expectation that in all but the most unlikely scenarios, the matter of capturing a US or a foreign person on US soil will be a law enforcement matter, and the Posse Comitatus Act prohibits the use of the military on US soil for law enforcement purposes. I do not believe that Congress specifically authorized such actions in the AUMF, so the PCA would control. I can’t say I thought much about the question as a constitutional matter, I think the law is sufficiently clear on this point.
As far as the US military being used overseas to capture US persons, to the extent that the AUMF allows military operations against Al Qaida and its associates, yes, I think that’s acceptable and constitutional. Sending the military to capture US persons for other reasons – like because they are notorious criminals – I think I would be very cautious about that simply on policy grounds before even considering the constitutionality of it.
I rely on the text of the AUMF itself. There’s no indication that it contemplated having a shooting war on the soil of the United States. If Congress intended that, it should have wrote it in the resolution.
Now, if something bizarre and extreme happened, like Al Qaida managed to attempt an amphibious landing in Boston, the President would have inherent powers to repel that attack regardless of what the AUMF says, just like the President could act to repel a military attack on our shores by the Rooskies. But I do not believe that there is any evidence whatsoever that Congress intended there to be contemplated, planned US military attacks within our own cities.
It is my opinion that declarations of war are presumed to be authorizations to use military force externally to the maximum extent practicable, and that extreme, maximum deference must be given domestically to law enforcement rather than military actions.
Also, just to be clear – I think Padilla should not have been transferred to military custody. I haven’t thought about whether that was unconstitutional or not, I think it’s just simply wrong.