Maybe none of them ever cheated on their spouse, just as some of the people the CIA have water-boarded were not terrorists after all.

Here's how I imagine these demonstration sessions would go:
Senator Minority Leader, Mitch McConnell,

The senator opens his eyes showing real panic as they dart from side to side.
Sen. McConnell: "No, no, really, I never did. Never did. So, fine. I see how it works. Now please untie me."
Interrogator: "Ah, not in the mood to talk yet. Okay, have it your way, Senator. Jack, lower the board again."
Sen. McConnell: "Whoa fellas! Not again. No. Wait. Please wait. Okay. Fine. Yes, yes, sure I cheated. Yep I did. Now untie me."
Interrogator: "Not so fast, partner. All you've told us so far is that -- as we suspected -- you cheated on your wife. Now we need to know how many times and with whom."
Sen. McConnell: "Okay guys, this has gone far enough. I get the point. It's torture. People will say anything to get you to stop. Okay. I get it. Whatya want me to say and I'll say it. Now let me off this damn board."
Interrogator: Oh, I wish it was that easy, Senator. But when we water-board suspected terrorists we are told we must connect the dots. You remember connecting the dots, don't you? If we let everyone off for giving us a nugget or two, well, that wouldn't do at all, now would it? We have to finish our interrogation. Now, one more time Senator, how many times did you cheat and we want names."
Senator McConnell: "Never and with nobody. This is stupid!. I just said that so you'd untie me."
Interrogator: "Okay Jack, lower the board."
Senator McConnell: No, no, NO! Wait. Okay. Many times. More than I can count. You wanna know with who? Okay, I did Madeline Albright, Helen Keller, Mother Teresa, (twice, missionary position, of course,) -- Ophra, Jackie Kennedy.... ah, all the DC Madams' hookers and, one night -- while Larry Craig and I were out drinking -- a strangely attractive ewe. Now, let me go!
The Senator is released.
"None of what I said was true," McConnell shouts when free. "None of that would stand up in a court of law."
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