“The space researcher was allegedly randomly checked on arrival, during which his professional computer and personal telephone were allegedly searched. Similarly, messages about the Trump administration’s treatment of scientists have been found.”
Good luck checking my laptop. I hope you enjoy looking at the UEFI password prompt. If You get past that, a LUKS password prompt awaits you. Finally, you have to guess my unlisted user name and password to get access to my system.
That's true, but if push comes to shove and you're a non-citizen, they probably won't do something crazy like force you to decrypt things or arrest you they'll just deny you entry