A NASA Engineer Was Required to Unlock His Phone at the Border

I'm sorry but there's no way I would give into this invasive search protocol as a citizen.

Even if a judge rules that the 4th amendment is not violated (good luck holding that up), then the 5th amendment surely could be invoked. Seeing as you're not being charged with any specific crime, if any data found on your device is construed as being an infraction of some law then giving your passcode would have been self incrimination.