If waterboarding or other torture methods were conducive to better intelligence, then that would be a far more difficult decision. But because of the cellular structure of information and autonomy that goes on in fabianistic tatics, there isn't really much intelligence to be gained, and that which you do have will probably be more misleading than not. After all, a person under physical duress will tell you anything you want to hear, and not necessarily the truth.

Torture is only really useful for indoctrination, and some of these techniques the US wants to utilize have been explored by Margaret Singer, Richard Ofshe, and other shrinks.