if they had an order of deportation and ICE didn't know of their whereabouts, or if they didn't have something pending; they wouldn't qualify for Dream.
some of us have deportation orders against us, so in order for us to still qualify for Dream, we have to be under the "color of law"; meaning, we cannot be hiding (absconded) from immigration officials.
For the ones here that have final deportation orders against them, OR are awaiting your trial in front of an immigration judge; DO NOT go into hiding, no matter what decision you get. try and fight your case through appeals or anything to buy time.