Earlier quoted context omitted.
That sounds great when typing it up on the internet in a comfortable chair, but when a few power hungry workers with guns are breathing down your neck in a small room you can't get out of, the rules aren't going to make you feel 'safe'.
That's why in fields where this isn't uncommon you drill and drill and drill your response until it becomes second nature. If you don't comply you are still an American citizen. CBP cannot deny you entry for any reason (yet). However, they can make your life hell for as long as legally possible. If you are prepared for that then you absolute can and should tell them to pound sand. Just like you should to the police.…
I went through the border without a phone or anything of interest for them to search. They cuffed and shackled me, finger printed me, booked me, tossed me in a cell. Then held me for 16 hours while driving me to hospitals and told doctors there was drugs up my ass. Towards the end they got a warrant to cover their ass, where they woke a federal judge and and the US assistant attorney in the middle of the night and told them vicious lies that a dog had 'alerted' on my asshole and that during a (real) invasive strip search they found (fake) evidence of smuggling.
[note: am US citizen]