French scientist denied US entry after phone messages critical of Trump found
Guardian5 days ago
This action represents an unprecedented assault on academic freedom and is a sign that the Trump administration is killing free speech. Expressing personal opinions about government policies should not be grounds for exclusion from the US, especially for legitimate scientific collaboration.
US authorities have the sovereign right to deny entry to individuals whose communications raise security concerns. Regardless of their professional status or purpose of visit, national security takes precedence over freedom of expression by non-US citizens.