Everything? How about raping the daughter of a detainee in front of him? Beating his infant child in front of him?
I doubt you'll say these things should be 'on the table' for use by Americans seeking information. There is a line to be drawn. Where the line is drawn is a legitimate debate.
have you ever interrogated POW's?
If he knows about a nuke that's going off in Washington DC in two hours the answer is yes. But those two techniques are beyond the pale though 3rd world dictators use them all the time