Restoring from remote backup when you reach your destination, then wiping again before you cross borders. Or shipping the (encrypted) data separately and picking it up after safe arrival.
The government can easily get your remote backup, of course. It's just that border control won't know you have one.
What's the difference between this and wiping when under duress using the special PIN? If you aren't being checked you don't wipe and are gopd to go.