I think its a difficult situation...I agree with the whole idea that if we do it, we can't be suprised when it happens to American POW's, however, in the short term; I think this is the type of enemy that will do whatever they please to American's, regardless of the path we take in treating POW's. I also think if the US Government publically admitted to the general use of torture, it would be a lot of fuel added to the jihad fire....
However in the long term, we have to entertain the idea that in the future, there is the potential to be fighting a war against a state, and a legitimate military, and once again, I don't think we want them to view torture as "fair game" because the United States is doing it.
Back to the current situation......Should we allow needless and random torture against any POW just for the hell of it? No, and it should never be stood for...That said, if an individual is captured, and we have reasonable belief that he (or she) harbors time critical information, which would lead to an attack, or the loss of life, then I think it is the duty of the US Government to make every attempt possible to extract the information. Defining everything and setting definitive rules is a whole different story, that i'm not even going to get into though.