It ONLY applies to citizens. The CBP cannot deny an American citizen entry into the country for any reason. They cannot compel a citizen to unlock their devices. All bets are off for non-citizens, sadly.

>> I had thought (and Supreme Court ruled) you could not be compelled to unlock an encrypted device

>Does that apply to non-citizens? If a CBP officer doesn't like you as a non-citizen, like your lack of cooperation during an interview, they could just deny your visa and your entry into the US.

That's exactly what "you could not be compelled to unlock an encrypted device" means? You won't get sent to the gulag for refusing to, but entry into the US was always conditional with very little room for recourse if the border agent doesn't like you.

I think assuming that the CBP will adhere to the law is based on a pretty outdated mindset. I'd say at least since the current management, but more likely since 9/11...