FYI, that endowment is about 10 bill more, but it’s mostly earmarked, and not just sitting there available to deploy in a legal battle

Even so, off is better. Disk is unencrypted when on, leading to potential extraction. When off, there is more protection

Which US citizen did he deport? I’m not aware of that

Depends if you are a citizen or not. Limited rights at the border, but you have an absolute right of entry as a citizen, but depending on the situation they may detain you for some hours, or take your phone. Turn off all devices before crossing, citizen or not, use full disk encryption, have backups somewhere else. Assume you will never see your devices again. Be prepared for that.

If you aren’t a citizen, you have even less rights, they can send you back if you fart on their general direction.

Face scan unlock is NOT enough. When crossing the border turn OFF the phone. Don’t just lock it, full off. The security protections from cellibrite attacks are much much much much stronger if it is off