I too wondered about this, but conversely you have to question how serious they could be given that US authorities just shipped the guy back to France without detaining him for days or filing any charges. It's a little hard to square the quoted suggestion that his comments could amount to terrorism with the actual response.
Not sure how it works in the US but many countries can choose to deny entry for any reason and my understanding is they don't even need to provide a reason.
If that is the case here then I really doubt the researcher was told that they have been denied entry due to their personal opinions on the Trump administration. This really just leaves us to speculate.
If legal authority or lack thereof is not the issue then the details matter if we're going to make an issue of this. I suspect that the researcher's private communications should not have caused them to be denied entry, though to be certain we'd have to see them.
Would a researcher who said something like "J6 should have gone all the way" have been denied entry in 2021? I suspect they would have, and that many would have cheered that refusal.
>Would a researcher who said something like "J6 should have gone all the way" have been denied entry in 2021? I suspect they would have, and that many would have cheered that refusal.
On what basis do you have for this belief? Frankly, I think that's facially ridiculous.
Sorry I have not heard of a single instance where a foreigner was denied entry into the US because of their beliefs about January 6, I think you're going to need to support an assertion like that when you say it has happened "lots"