This week, four of the top candidates for the 2020 Democratic presidential nomination -- Pete Buttigieg, Amy Klobuchar, Julian Castro and Bernie Sanders -- gathered at the J Street Conference to explain why the United States ought to pressure the state of Israel to make concessions to terrorists, why the Obama administration was correct to appease the Iranian regime and why American Jews ought to value the opinions of Bernie Sanders over those of Israeli Prime Minister Benjamin Netanyahu on the future of Jewish safety. Two other top Democrats -- Elizabeth Warren and Joe Biden -- sent video messages in...