Comment by mothballed

I've been thrown in immigration jail as US citizen. They will not provide or allow you access to a lawyer and you won't see a judge to determine if they have PC to hold you. You just sit there until they decide to eject you. Nothing else to be done and no one to contact, plus most of the other prisoners cannot speak English.

CBP via a bunch of crazy court cases, basically operates outside constitutional constraints. This is also why DHS has been used as private army by POTUS (snatching up people in unmarked vans in Portland for instance) because they can be ordered essentially directly by POTUS and not have to worry about the constitution.