Right, but by that rationale, it’s also suspicious to say “no” when they ask if they can open your suitcase. Or decline to tell them where the key is. Or ask to speak to your lawyer first. Or refuse to tell them what is in the suitcase. Or lock the suitcase in the first place. And I want to live in a society where those behaviors are protected.

(1password has a “traveling” mode that wipes it of sensitive passwords before going across borders. Is that suspicious? Should it be criminalized?)

If they ask to open my suitcase and I say 'no' that is suspicious. I've done a lot of travelling and have been questioned more than once: being candid and transparent has always been prudent.