Five American Jewish groups call on President Biden to act against antisemitism Multiple antisemitic incidents occurred over the past two weeks in the U.S. and around the world in the wake of the conflict between Israel and Hamas. Five of the U.S. largest Jewish organizations have sent a letter to President Joe Biden calling for immediate action against antisemitism, after multiple antisemitic incidents over the past two weeks in the wake of the conflict between Israel and Hamas. Hadassah, the Women’s Zionist Organization of America, the American Jewish Committee, the Anti-Defamation League; the Jewish Federations of North America and the Union of Orthodox Jewish Congregations of America signed the letter, which expressed “grave concern over the recent surge of antisemitic attacks here in the United States and around the world, and over social media.”