The ones left in Guantanamo were given trials and found guilty of war crimes, including the rape and torture of their own former countrymen. Rotting in a prison with free healthcare, food, and religious materials is better than they deserve.

You really should do some basic research before you try to argue out of your rear on this.

Legally obligated by what? Aren't people deported back to their country of origin all the time. They don't want to take them fine, deny their citizens visas and entry then, until they do.

> Congress passed a law barring the transfer of those prisoners to stateside facilities from Guantanamo,

Ok fair point, you're right about that. Why make strong promises then?

> US would have been within its rights to execute these individuals

That's a bit disturbing. At that level what rights are we talking about. US had been droning people including American citizens, so sure they could have taken them back and shot them. So we should be glad they didn't. Great, I guess?

By treaty.

Why make strong promises then? Because when he made those promises he had a Democratic Congress and a reasonable expectation of fully fulfilling his promise, which he still managed to almost fulfill despite the most hostile Congress in history.

At that level what rights are we talking about. US had been droning people including American citizens, so sure they could have taken them back and shot them.

We're not talking about civilians or soldiers. We're talking about people who deliberately and avowedly took up arms against the U.S., renounced their citizenship (U.S. and non-U.S. alike), and raped, tortured, and murdered civilians and soldiers without any attempt to follow the various treaties established for wartime conduct.