The US Military Code of Conduct states " If I become a prisoner of war, I will keep faith with my fellow prisoners. I will give no information or take part in any action which might be harmful to my comrades. If I am senior, I will take command. If not, I will obey the lawful orders of those appointed over me and will back them up in every way".
If any American POW violated this code he should be brought to trial and be imprisoned, at worst he should be executed by firing squad. I doubt there were many cowards as some of you claim. The US Military is, was, and always will be an honourable institution with no place for COWARDLY traitors.