Earlier quoted context omitted.
If you aren't planning on going to the US or to whichever other countries might try something similar, then I suppose it's a moot point for you, and you don't need to worry about your phone at all. But if your home government started treating you unreasonably, you might also be interested in having a discussion about possible reactions to the new policies, right?
Maybe, but I don't know when I might need it in the future, and when the time comes it's already too late. That is why I'm interested in this topic now. That is also why I'm not dismissing the idea because of some possible charges that might be laid against me by some possible border control person some time in the future. I have nothing to hide personally. I'm more concerned about business secrets and SSH keys.
If you have nothing to hide you should have nothing to fear. Because you know that US is never involved in industrial espionage and Snowden NSA leaks have allegedly never happened.