Throwaway for obvious reasons.
There was another similar story reported previously [1].
On that same week, I traveled to Canada. I'm from America but not the US, I have a tourist visa for Canada valid for the next 5 years or so. I've entered Canada many times in the past, zero issues. Zero criminal records, not even traffic violations on my record in any country whatsoever.
Upon scanning my passport I was immediately sent to a different queue for inspection. Similar behavior, when the border officer asked me why I am in Canada I told them I was visiting, when they asked what I do for a living I told them I didn't have a job, I have a healthy dose of savings that allow me to not work for a while and just travel, as I have done several times in the past.
They told me that was "shady", I was interrogated by two officers for about an hour, they asked me about everything, then was sent to a room to wait (it was a comfortable place, to their favor), about half an hour later they come back and tell me I'm allowed to enter but I have to report back to them, physically, in a month and leave the country the same day.
Obviously I didn't have it as bad as these two girls, but in my own timeline, it was definitely the worse border crossing experience I've ever had.
A few weeks before that I was in Mexico, and the border officers where also quite intrusive and thorough with everybody. This almost never happens in Mexico, everyone just goes in, no questions asked.
Since all of this has happened during these past weeks, my conclusion is that, in general, border officials in North America have been told to be very though with all immigrants, perhaps fueled by the demands of the Trump administration. I also think, unfortunately, that this situation will only get worse as borders and international travel will become more and more scrutinized.
1: https://news.ycombinator.com/item?id=43324040