So Chomsky, like his protege Norman Finkelstein, has been denied entry to Israel (or to territory occupied and partially illegally annexed by Israel). The irony is that neither of these guys supports the one-state concept which is increasingly popular in the circles sympathetic to their ideas. Both are supporters of Israel. Perhaps now, given the notable erosion of Israel's democratic ethos, they will reconsider their attitude.
from the article: Noam Chomsky denied entry into Israel and West Bank