He had been invited to the West Bank by the PA, and he had accepted that invitation. It's the Israelis who then step in between those two to keep them from meeting. Comparisons with the UK refusing to allow someone to enter the UK are therefore rather tenuous, to say the least.....
U.S., allies conduct 1 air strike in Syria and 11 in Iraq against ISIS militants (Reuters)
from the article: Declaring war on the intellect - Israel and Noam Chomsky