The letter seems to be fitting into a pattern of pro-Israel organizations, such as Canary Mission and Betar, targeting critics of Israel’s military actions, as well as supporters of Palestinian self-determination. Betar says it has provided lists of noncitizen protesters to Immigration and Customs Enforcement, the Department of Homeland Security, and other government agencies, recommending deportation.
In a pre-1947 world, would you support the creation of a Jewish state in Palestine? Knowing, of course, that there’s no way of drawing the lines of such a state without including a significant number of Arabs that precludes a state that’s both Jewish and Democratic without ethnic cleansing. The way real-life Israel “solved” this problem was by committing ethnic cleansing, AKA the Nakba.