Laughter is the best medicine.
I suppose if you have been brought up to believe that it is fair, reasonable, and right that people’s life and liberty should be sacrificed solely in the interests of demonizing the Jewish State, it’s no great leap to sacrifice the chance to visit your grandmother to keep the fires of hate burning. What a great example of citizenship that is!
Oh, and in case you missed it, the Obama administration banned an Israeli MK from entering the USA in 2012 for his extremist views. Sauce for the goose… Pretty rich of those USA parliamentarians to cry wolf now.