A unanimous report of twenty-five U.S. Senators on the Armed Services Committee (including twelve Republicans) has identified the key responsible parties in the Bush Administration's torture policy. While the report doesn't expressly conclude that they called for torture and were war criminals in those words, that is the clear implication of the short, factually clear, name naming report.
The clear evidence is that these policies don't further intelligence gathering, even in the cases extreme methods are theoretically reserved for us in. Worse yet, one U.S. interrogator has estimated that as many as half of all U.S. casualties in Iraq were motivated by a desire to obtain retribution for this U.S. conduct.