Don't we need to know how much has been going on that is now banned by the Bill that bore fruit, to know how much this will interfere with knowing what we need to know, before measuring the harm? My personal view is that torture should be banned unless signed off by the President himself as something critical to US security or war effort, ie the Dershowitz position. There should be an accountability trial right to the top. JMO.
One issue is the law itself which is vague in banning cruel and unusual punishment leaving it up to courts to interpret very liberally.
The other issue is the wording of the bill which gives terrorist scum 5th, 8th, 9th and 14th amendment rights.
Have you read it? It's an unlawful combatants dream come true.