At his Atlantic Correspondents blog, Alex Gibney discusses the political viability of eating Guantanamo detainees:
Now, unfortunately, some prissy card-carrying members of the US Constitution have made us all look bad by pointing out that many of the Gitmo detainees weren't guilty of anything. Whoops! However, even more problematic for President Obama, it appears that many of these previously "innocent" men have become radicalized and pissed off after being held for seven years in Supermax prisons in southeastern Cuba. We can't possibly let them go now because they don't like us anymore. As we know from our own experience with American prisons, being locked up with hardened criminals (or terrorists) doesn't turn prisoners away from crime; it educates them on how to commit bigger and better crimes.
So now that we've turned nice Afghan farmers into hardened jihadis, what do we do: apologize and turn them loose to grow wheat in Idaho? No way.