It's wild, I have worked internationally for a long-time and the rule when going to certain countries was bring a burner device. Going to China essentially meant the device was nuked on return to the States, now it is the same feeling to/from the US.
So long as only a few countries are doing this, it might seems doable. If everyone starts doing it, international travel becomes rather annoying to say the least. Realistically I think at some point a detente might want to be reached, with everyone agreeing not to search everyone else's electronics.