If you can recover your data at the border, and you're not a citizen, you should be prepared to do so. There's no clever trick that scales to ordinary people that protects data from CBP. That's the think people need to be clear on: it's inconvenient, but they need to not only not be carrying sensitive encrypted data at the border, but also not carrying any indication that they have it, or have any such indication attached to their name.

An LPR is a green-card holder, a lawful permanent resident.