1) Israel Jews tend EXclusive, and US Jews are INclusive. Israelis appeared to hold themselves separate and superior, and treat others are lesser. Jewish Americans do not treat others as lesser. The response of people who are treated as lesser always going to be dislike and resentment. This American INclusivity has been further offended by an Israeli tendency to even disparage non-Israeli Jews as being, "Not real Jews." 2) The Israeli message to Jewish Americans has been, "You have to support us, whether or not you like what we do." The American Jewish answer has been turning to, "No we don't, especially if you violate Jewish values by stealing from and oppressing another people." 3) Israel's apparent rejection of every solution to the Israeli/Palestinian problem, out of hand is alienating foreign (not "diaspora," they are not in exile) Jews AND non-Jews. Correct the behavior, and the problem will correct itself.
One dead, three injured in Northern Arizona University shooting (DPA)
from the article: Fair-weather friend: Israel's selfish attitude toward Diaspora Jewry