Originally Posted by
jphripjah
CBP can't force anyone to do anything. People need to stand up for themselves.
"Will you unlock the phone please?"
"No."
Easy.
I'm not sure they can "force" you to unlock your phone even if you're not a US citizen. Of course, they could always deny you entry if a non-citizen (with some exceptions), or seize the phone and attempt a forensic analysis.
Unfortunately, I think we will need to end up with a court case where someone pursues this all the way to the folks in the black robes on First St NE and sees what they have to say specifically, as
the rulings in Riley and Cotterman are not as clear on this as they could be.