Back on topic...
The wikipedia article will show up if you add a period to the end of the link once you've loaded it (the forum software thinks it's punctuation but it's actually part of the link).
I'd never heard the story in the link you gave, but it seems pretty uncontroversial to me. I don't know the "rules of war," but I'm sure they're not a suicide pact. He was under fire, so using enemy soldiers as a shield was an act of self-preservation. The only objections to using "human shields" I've ever heard of involve civilians. I doubt anyone could make a serious case that Carter did something wrong, unless there are some facts we're not privy to.
I believe the main fact remains this guy was awarded the MoH under president Clinton and the right wants to spitefully undo anything he did that they can.