avoiding travel to hostile countries

The 11th IEEE International Conference on Self-Adaptive and Self-Organizing Systems, to be held at the University of Arizona, Tucson, AZ, USA this September has the following statement, in bold, at the bottom of their home page:

Remote Attendance
This year’s conference is scheduled to take place in the United States. We recognize that due to the current or potential future actions of the United States government, some people may be unable or fearful to attend. We have considered moving the conference to another country, but recognize that that will not resolve the situation, as some people may likewise be unable to safely leave the United States. Therefore, for any person who wishes to participate but is unable to do so due to the travel restrictions imposed by the United States government, we will be offering a “remote attendance” registration at a discounted rate, to be announced at a later point in time. Authors with accepted papers will be able to present their work remotely, complying with IEEE presentation requirements, and we are investigating videoconferencing solutions for streaming to remote attendees.

I was wondering long it would take for something like this would happen.  A sign of the times, indeed.

[h/t to Russ Abbot]