It isn't enough for me to draw a conclusion, but it's enough for me to question this story which so far has only one side represented. If this comes down to the academic in question making social media posts that tripped FBI/Secret Service's "talking about killing the POTUS" or something similar, then yeah that's going to potentially raise flags at the border.

The rules don't change along with the president after all, just like people doing the same thing with Biden or Obama would have raised flags, this would too.

To be sure we'll have to wait and see the messages that are the focus of concern. What bothers me is that so many here are simply running with the headline and turning off their critical thinking because they (understandably) hate Trump's guts.