The Greatest Free Speech Absolutist!
*But only for Nazi garbage.
These types of things are usually scheduled well in advance. Just one example, it is worth noting that I am not saying that this was the reason the scientist traveled to the United States, scientific centers with certain types of very expensive equipment usually rent it to projects from other scientific institutes and universities, sometimes with such high demand that you can wait years for it to be available for your project.
Of course, they are married since the 80s.