>this story and worse ones to come are exactly what we were afraid of coming from Trump.

To dial back the hyperbole for a second, we've seen this kind of story happening before Trump took office, and in countries other than the US. Crossing borders carries with it a non-zero chance that you'll be treated like total crap and even when you're lucky enough that the system corrects itself you'll almost certainly get no apology. Having said that, there is no reason why this kind of thing should be tolerated.

Edit: somebody else remembered the similar story from last year.