This morning I learned of a petition you can sign online that calls "for an impartial, nonpartisan, and independent Commission of Inquiry. Its purpose should be to gather all the facts and make recommendations. It should ascertain the extent to which our interrogation practices have constituted torture and "cruel, inhuman or degrading treatment". Understanding the causes, nature and scope of U.S.-sponsored torture is essential for preventing it in the future and eliminating it from our system without loopholes. U.S. law will determine the extent of any criminal culpability."
You can find the petition here.
You can learn more about this Commission of Inquiry here.