Read other letters about this article
However, she did note that the Manual could be altered by Executive Order [I'm surprised it is that simple] which could leave a loophole for another Bush or Cheney to incorporate techniques which could be called torture.
Future congress or president may well issue law or order that run contrary to the constitution or signed treaty, but they can be brought to court if they do it.
But then there's that damn 'standing' thing.