The Geneva Conventions prohibits cruel and inhumane treatment of detainees. Countries that violate the Geneva Conventions, including Common Article Three, can be held accountable for charges of war crimes.
The Army Field Manual, a 384-page book lays out 19 interrogation techniques permitted by law and prohibits nine categories of others, including waterboarding.
What these men went through was cruel and unusual punishment, precisely what is considered torture. Yet, the US court system is protecting these criminals.
Japanese and German Nazis were executed for these same torture techniques after WWII by the US, and now the courts are protecting US personal for the same type of torture? Again I say, bullshit!