The vast majority of us will never encounter such a scenario but...
Outside of asking a family member/friend to retrieve your HW wallet and/or seed
What do you do in such a scenario?
While it's generally not recommended, IMO this one of scenario where brainwallet or having encrypted cloud backup may help you.
The truth is that if it already happened and you do not have the encrypted copy of your seed phrase or a part of your seed phrase for recovery, I think there is nothing you can do about it.
For someone who never prepared for deportation and does not have any of these to recover a hardware wallet, I think the only option is to reach out to a trusted friend or close person to see if they can help retrieve or send the funds, but only if they are genuine and trustworthy. If they cannot be trusted, there is no need to think about this or even to try because you may end up not having it at all.