OFO may hold U.S. citizens in custody in certain situations, such as suspicion of or a
determination of violating U.S. law, pending transfer to another law enforcement agency on an
extraditable warrant, or if accompanying a family member being processed for appropriate
immigration proceedings. Available data indicate that OFO held U.S. citizens longer than 24
hours on 562 occasions from October 1, 2019, through April 30, 2021.
And that’s 2021 before things started getting hot.
Refusing to unlock your properly secured device for them will result in its confiscation and perhaps your detention.
Password managers and browser history are sticking points. You could not use your device for anything, but one of your services might rat you out.
You kinda need a travel phone.
If you’re a us citizen, they cannot detain you indefinitely. What that means isn’t legally defined yet, but seems to be around 4 - 8 hours.
Edit: apparently no longer true.
CPB statement
And that’s 2021 before things started getting hot.
Thanks for that correction.