As others have pointed out, Kirk isn’t going to come to campus ready for an honest, good faith discussion.
Also, there is no need to invite a person to a campus in order to refute their ideas. There are plenty of other forums, both online and in public where this can occur. We know his thesis and it has been dismantled over and over again. Plus, much like Trump avoided a primary debate, Kirk isn’t going to sign up for a debate where he knows that he’ll be refuted or discredited.