I could very easily spend an indefinite time in detention being tortured, causing irreparable damage to my life, my health, my finances, and my public reputation, as the result of the racist, sexist, or anti-LGBT whims of a DHS thug, and there would be no legal recourse for me, whatsoever. And if I attempted to resist in any way, I could be brought up on criminal charges or even summarily murdered.
All I'd get is a "sorry about that", while they sneer at me right to my face, if I even survived.