He probably wants to find out where the best Gentile Blood Matzos are sold in Israel. Or where the vats of Palestinian livers are kept until we chop them up with a little bit of fried onion, or sell them to rich, Joooish investment bankers.
I am really not a fan of banning anything-that seems to me to be a reflexive, idiotic liberal thing to do. I think it would be much better to let this fellow into Israel, as long as he is properly identified in the local media so that he can have quality interactions with Israeli Jews at every possible opportunity.