What's Harvard's excuse gonna be?
Good question.
Hosting Hatemi, unlike maintaining good relations with some of the pre-eminent universities in the world even after their country was taken over by a regime of antisemitic thugs, takes a bit of explaining.
In considering Columbia and Harvard's behavior, one really must remember that Germany was the country that invented the Ph.D., and that most of the major advances in mathematics, physics, chemistry and medicine in the period between 1870 and 1935 took place German universities or had participants who had graduated from German universities.