It's not just the US that has these draconian and abusive laws.
In the UK you can be detained at the border without being given any reasons why, you don't have the right to a lawyer and you don't have the right to NOT answer the questions of the border agents. You also have to disclose the passwords to your phone and computer.
Then,they usually seize your devices for an arbitrary amount of time before eventually releasing you.
This applies to British citizens or foreigners.
It seems that the world is slowly but surely sliding in the wrong direction.