Finally Obama appears to have caved to public pressure and signed something saying he won't use the NDAA to indefinitely detain American citizens.
Sure. And I have a bridge I'd like to sell you. Because a PPD is nonbinding. Even if Obama adheres to his own PPD it doesn't bind any future president. Or he could change his mind tomorrow with no consequences.
The clause that was going to be in the NDAA law itself that would have done this permanently was removed specifically at Obama's request when they were writing the bill. So he wanted this power. I don't believe he will adhere to his PPD if unrest breaks out.
Also, there was that bill of Lieberman's (H.R. 5237, The Terrorist Expatriation Act) that if passed could have stripped people of their citizenship if they were accused of supporting foreign terrorist groups. It's possible that could come back like a bad penny in the next Congress.
I wonder if they could say, "oh, your jealous asshole ex called and said you support Hezbollah, or FARC, or whoever, so VOILA you're not a citizen any more, but we can't deport you anywhere because you were born in the US, so guess you'll just have to go to Gitmo forever."
They called this little gem the "TEA" act, gee I wonder who they really wanted to use it on, the Tea Party? I guess they'd have to call them a "foreign terrorist group" in a similar twisty way, or maybe it's just a semantic game to trick people into associating the word "tea" with "terrorist".