Yet when Barghouti, a permanent resident of Israel, showed up for his flight from Israel’s Ben Gurion International Airport last week, he was informed that the United States was denying him entry. When I spoke to him on Sunday, he still didn’t know exactly why the country where he went to college and lived for many years wasn’t letting him in, but he assumed it was because of his political views. If that’s the case, Barghouti said, it was the first time someone has been barred from America for B.D.S. advocacy. He has proceeded with his public events, but he’s been appearing at them via Skype.