Defcon is my biggest regret about the whole "US going to shit" situation. I'm from Europe, and I was planning to eventually attend, but there's no way I'm going there until USA gets their shit together, which I suspect won't be during my lifetime at this point.

They should move it to Europe, especially for this kind of event, I'd suspect that for a lot of attendees and speakers, who tend to be pretty anti-systemic, going into US safely at this point is not an option.